There's simply no debating that modern aftermarket suspension systems outperform vintage stock setups on all fronts. It only makes sense; with decades of testing, design, and data on hundreds of automotive platforms to derive from, engineers today have so much more information to build on. That's why any modern four-door commuter sedan will out-handle any stock muscle car. Sad, but true.

While OEM offerings have obviously evolved, so have the aftermarket offerings deigned to help bring our beloved vintage rides up to new car standards. Pulling from both the OEM consumer and even the professional racing worlds, the products and packages available in the aftermarket today have progressed to the point that it's not unthinkable to get old steel up to—and even beyond—modern muscle cars and sports cars without reinventing it from the ground up.

Some systems are more ambitious than others, it all depends on the level you are prepared to take your car to. Want to tear everything out and go full-on modern or race underneath the skin? Can do! Systems engineered with performance above preservation in mind are out there, but sometimes that's just not what a project or budget calls for. Sometimes it's the simplest solution that fits the need.

That same engineering development in the aftermarket that we referred to has increasingly been used to design suspension packages that drastically increase a car's capability while keeping the install as bolt-on as possible. Sometimes it's hard to discern the installation commitment level from the advertisements, so we rounded up 18 of our favorite suspension systems, but we kept it to only systems that don't require major cutting, modification, or fabrication, and either bolt directly in or only require a few alterations. Perhaps a hole or two will need to be drilled, maybe a bracket clearanced, and possibly even light duty welding. We even drew the line at keeping the stock subframe. The essence, though, is that they are all relatively simple solutions that aren't out of the wheelhouse of the average garage wrencher.

Since we are using modern performance cars as our standard, we also kept our roundup isolated to systems designed to improve the overall driving experience, not just a single parameter, such as straight-line acceleration. (We expect more than that from our projects!) While we pulled some of our favorite packages, all of these companies have many more products and systems available. See something that intrigues you? Go check out their websites to learn more and find the company and the kit that's right for you!

Chris Alston Chassisworks
G-Street

These front suspension packages include gStreet tubular upper and lower control arms with bonded rubber or poly bushings, and Vari-Shock coilovers.

Front Applications:
1967-81 Camaro/Firebird
1964-72 Chevelle and GM A-body
1955-57 Chevy
1958-70 Impala
1978-87 Monte Carlo and GM G-body
1968-74 Nova

Pro Touring
These rear suspension kits vary by application, but all of them use a Chassisworks g-Bar with a coilover conversion. Sway bars are included on some kits.

Rear Applications:
1955-57 Chevy
1967-81 Camaro/Firebird
1964-72 Chevelle and GM A-body
1968-72 Mopar B-Body
1970-74 Mopar E-Body
1958-64 Impala
1978-87 Monte Carlo and GM G-body
1964-70 Mustang/Cougar
1962-79 Nova (GM X-Body)

Source:
Chris Alston Chassiworks
888-388-0297
www.CAChassisWorks.com


Classic Performance Products (CPP)
Complete Performance Package

CPP's bolt-on package includes Totally Tubular control arms, front and rear performance springs, front and rear sway bars, front and rear Black Magic performance-tuned shocks, and upgraded spindles (varies per application). Early Nova and Mustang kits feature MINI Sub-Frame, a 400 Series performance steering box, and includes CalTracs traction bars.

Applications:
1964-70 Mustang
1967-70 Cougar
1955-57 Chevy
1959-64 GM fullsize
1962-79 Nova
1967-78 Camaro/Firebird
1964-72 Chevelle/El Camino and GM A-body

Source:
Classic Performance Products (CPP)
800-830-9297
www.ClassicPerform.com


Currie Enterprises
CurrieTrac Rear Suspension

Currie's billet aluminum lower control arms and adjustable upper control arms are built with Currie Johnny Joint rod ends and feature 30 degrees of articulation.

Applications:
1964-72 GM A-body
1959-64 Impala
1978-87 GM G-body

Source:
Currie Enterprises
714-528-6957
www.CurrieEnterprises.com


Global West
GM Category 5 G-Plus

Global West's comprehensive system includes tubular control arms with Del-a-lum bushings, 1.125-inch sway bar, centerlink for correcting bumpsteer, inner and outer tie-rod ends with adjusting sleeves, QA1 adjustable shocks, 1-inch drop springs, spindles with brake system fully assembled, and braided stainless steel lines.

Applications:
1967-69 Camaro/Firebird (Category 5)
1964-72 Chevelle/El Camino and GM A-body

Ford Negative Roll G-Plus
Ford systems includes tubular control arms with Del-a-lum bushings; adjustable ride height single-, double-, or non-adjustable coilovers; billet upper shock mounts; shock tower supports; and a sway bar.

Applications:
1964-70 Mustang
1967-70 Cougar
1970-77 Maverick/Comet
1968-71 Torino/Ranchero
1960-65 Falcon/Ranchero

Source:
Global West Suspension Components
877-470-2975 www.GlobalWest.net


Detroit Speed & Engineering (DSE)
Speed Kit

It varies by application, but most DSE Speed Kits include tubular control arms, a coilover conversion kit with DSE/JRi aluminum body coilover shocks with “Detroit Tuned” valving, front sway bar, DSE 600 steering gearbox with a rag joint and pitman arm, DSE tie rod adjuster, and inner and outer tie-rod ends with idler arm. Rear kits include DSE leaf springs (2- or 3-inch drop) with a heavy-duty shackle kit, or control arms and coil springs, and Koni Classic shocks.

Front and Rear Applications:
1967-81 Camaro/Firebird
1968-74 Nova
1964-77 GM A-body
1978-88 GM G-body

Source:
Detroit Speed & Engineering
704-662-3272
www.DetroitSpeed.com