From Sports Car Illustrated, Aug 1959, Play Your Ace, Kenn Rudd's VPL442 race car came with rear camber of 2 degrees negative (on paper). To increase driftability, he lengthened the rear leaf spring and added a leaf. No mention of how much he lengthened the spring. He also chose to run the standard Michelin X tires fitted by the factory. Another old magazine you may be interested in is Sports Car Wheel Aug/ 1959 with a road test of an AC engined ACE