Their stuff works in the A,B,C bodies...not in the F...engine will hit firewall with their mounts ( back of intake and the back of valve covers..not by much, but enough that you cant bolt them down...unless you use 10lbs of persuasion on the firewall, and the rag joint also hits the valve cover), their headers dont work in the F. The only way to get power brakes is with hydro boost. The Fbody engine bay is completely different and even smaller than the A body in certain places. People think anything that works on the A will work in the F, but not with the G3