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Mopar Front Coil-Over Conversion System

Product Description

Transform your classic Charger, Challenger, Dart or other classic Mopar into a restomod that drives, corners and launches like a modern machine.

Great-looking powder coated components improve performance and save weight while making it easy to swap engines, including Gen 3 Hemis. Coil-overs help you achieve the perfect stance and ride quality. Rack-and-pinion steering provides a modern feel and improved handling in any setting. Add the optional sway bar to further enhance performance and cornering capabilities.

Handling Configuration
This option uses poly bushings on the lower control arms to provide improved cornering and reduced NVH. They incorporate a heavier spring rate for increased front-end stability. Handling kits are available with 0-2” or 2-4” of drop.

Drag Configuration
This kit uses rod ends on both upper and lower control arms to improve weight transfer by reducing deflection. It includes a lighter spring rate to improve rear grip during hard launches. Drag kits offer 0-2” of drop.

  • Available for A, B and E Body chassis, including models like the Barracuda, Charger, Challenger, Dart and more
  • Drastically improve geometry, enhancing driving feel and cornering capabilities
  • Designed for everyday driving, drag racing and handling
  • Tubular design improves exhaust clearance while reducing weight
  • Works with multiple engine configurations, including Gen 3 Hemis
  • Made in the USA
  • Single- and double-adjustable shocks eligible for a Limited Lifetime Warranty

Building on a long legacy of great engineering, service and quality, our Gerst-designed systems instantly upgrade every aspect of your classic Dodge or Plymouth.


  • Single-adjustable shocks are recommended for cars used primarily on the street
  • Double-adjustable coil-overs are recommended for consistent drag racing, autocross or road racing
  • Gen 3 Hemi power steering pumps require a pressure reducer and the installation of a power steering cooler
  • Coil-overs and control arms in this kit can NOT be used with other QA1 tubular products designed for torsion bar suspension
  • Kits use Mustang II-style spindles for plenty of brake options
  • Kits with 2-4” of drop require wheels to be least 18” in diameter and disc brakes to be at least 12" in diameter


What power steering pumps work with the QA1 power rack?

For small block and B/RB engines, use OE pump. Use the Saginaw style on early cars and Federal or TRW style on later cars. CVF brand power steering pumps work well with these racks.

For Gen 3 Hemi swaps, the stock Gen III pump puts out too much pressure for the QA1 steering racks. Several companies modify new and used pumps at a reduced pressure (in the range of 1,100 -1,300 psi), including Bouchillon Performance and Holley.

How do you convert to a Manual Steering rack?

If you want to use a manual rack, use Speedway PN 91034344 or equivalent. The QA1 K-frame features pilot holes for manual rack mounting that must be drilled out. One of the holes overlaps and you'll need to use a step drill. The manual rack also requires a different steering u-joint to work with the 9/16-26 spline.

Some customers use the power rack with a closed-loop system instead of switching to a true manual rack. The provides the faster ratio (2.75 turns lock to lock vs 3.5 on the manual) without a power steering pump.

What spindles are used with these kits?

QA1 spindles start as Mustang II components and have modified steering arms. Standard Mustang II spindles cannot be used. Both standard height and 2” drop spindles systems are offered. Drop spindles require 18” or larger wheels and 12" or larger disc brakes.

What is the ride height range for standard versus drop spindles?

The ride height range for standard spindles is 0-2” lower than stock and the drop spindles provide 2”-4” lower than stock. Drop spindles require 18” minimum diameter wheels and 12" diameter brakes to provide room for the steering arm and outer tie rod end.

What brakes options are available for these systems?

Most front brake kits for Mustang II spindles will work. For the front, QA1 has used several Wilwood disc brake options. Wilwood rotors are dilled for Mopar 5 x 4.5” bolt pattern and 5 x 4-3/4 ”. Drop spindles require brake rotors to be at least 12" in diameter.

What parts need to be welded during installation?

QA1's Mopar front suspension systems are a complete bolt-in installation with the exception of the steering column u-joint. After shorting the steering shaft, the u-joint must be welded to the shaft.

What headers fit with these front suspension kits?

Keeping original equipment or factory high performance exhaust manifolds are both options. TTI and Doug’s Headers brands are also frequently used.