@davek posted:Dan Gurney's All American Racers designed a modification to the rear Pantera suspension back in the 80's that utilized most of the stock parts, but had adjustable mounting points for various applications (e.g. autocross, drag racing, road racing).
Interesting but probably untrue. I actually purchased this modification from a Pantera vendor who is no longer a Pantera vendor. He told me that he had developed this modification but had the geometry checked out by All American Racers to confirm it would work. The modification moved the rear upper control arm mounting points about 3" outward then used an upper control arm that was 3" shorter. The idea was, it generated a much more aggressive camber curve as the suspension compressed. The problem was, the rear upper ball joints would reach their maximum angularity before the shock absorbers hit their bump stops. Essentially, the ball joints were limiting upward suspension travel. This would destroy the ball joints in short order. If you were lucky, that's all that was destroyed. The vendor installed the mod. in Dave and Linda Adler's Group 5 factory race car ("Whiplash") and it nearly ruined a set of very rare DeTomaso racing uprights. Needless to say, they removed the mod. as soon as they discovered the problem.