http://www.porterbuiltfabrication.com/?p=453
Must use tubular a-arms for coils. Not changing center section just order arms.
http://www.classicperform.com/NewPro...s/QAShocks.htm
Easy Bolt-In Installation
Minimal modifications to be made. Remove the existing shocks and springs and the QA1 Pro Coil System bolts right back in.
• Specially Designed Conical Springs
This spring is designed so that the lower end sets on the coil-over shock and the upper end sets in the original spring bucket in the frame. This allows for the use of a longer and lighter spring for more stored energy, offering increased weight transfer. Greater durability is also achieved by locating the spring pressure in the frame and not on a single stud.
• Ride Height Adjustable
Threaded aluminum body allows ride height adjustment.
• These shocks are revalveable and rebuildable by QA1 Authorized Service Centers
The QA1 Pro Coil System utilizes the Proma Star® single and double adjustable shocks. The Pro Coil System includes:
• (2) Proma Star® coil-over shocks
• (2) specially designed conical springs. Two progressive spring rates are available, based on small block (250/350 lbs.) or big block (365/465 lbs.)
• All Mounting Hardware
These are not cheap shocks but the Finest Never Is!
• QA1 Pro Coil System Shocks