I've got the rack mounts, poly bushings, spax front shocks, lowered higher pressure springs, kyb kit shocks on the rear, 205/65R15's on the front, 205/70R15's on the rear, two Weber 40DEOE's and one SK(one WEber float cover broke and I had the SK's, just haven't gotten around to replacing the Weber cover, high volume water pump, electic puller radiator fan, Allsion/Crane and MSD ignition. I just like to drive quickly sometimes.(I usually ride my 91 Yamaha FJ1200 with 116K miles on it).Oh and the XK-140 balljoints, increased camber 1/2 degree negatively. 1/2 degree more caster on the drivers side than on the passenger side.
Main purpose of caster is returning to a straight line and tracking capabilites. As far as TR6's have enough. Well MB has 6+ degrees on a lot of years, so.........?