FWIW, I started suspension work 1 year ago on my '73 Autox car. After each mod, the car was tested at several events. Believe me, I have learned a lot in the process and taken it from mild to wild with steps in between. Stage 1 - Stock 240Z springs, stock frt/rear sways, urethane bushings all around, tokico blues. 14" Falken Tires. Result - Generally terrible handling. Almost uncontrollable oversteer. Stage 2 - Cut 280Z stock springs. A little more stable, but still generally terrible. Stage 3 - Coilovers with 10" Eibach ERS springs. 250# frt/275 # rear. Lowered several inches in the front. Sectioned struts. Tokico Illuminas. Custom built top strut mounts. New 14" Falken Azenis. Result: Much better, can see future potential, but oversteer is still a major inhibitor. Cannot lower the rear as much as I would like because of ground clearance of the exhaust. Stage 4 - Replaced Falken Azenis with 15" Hoosier and swapped stock diff for R180 4.11 LSD. Shorten headers and fabbed new exhaust so car could be lowered another inch without dragging it on the ground. Result: Now we are getting some where. Car is much more predictable, still some oversteer, but it is much more controllable and not really a problem. Stage 5 - Replaced springs with 7" Eibach ERS springs. 300#Frt/300#rear. Changed to 1" front & 3/4" rear sway bars. 16X10 Hoosier slicks. The car is so low that rockers panels are now maybe 2" off the ground. There is an extreme amount of rear camber - too much for these fat Hoosier. Result: Yea Baby! This is the way it should be. I can't hardly break it loose in the corners. A little understeer midway through sweepers, but that should be able to be tuned out. Stage 6 - Camber plates and Strut tower bars. Result: Not tested yet. Expecting less tire wear and additional grip from improved geometry. Stage 7 - I should probably lay off the suspension mods for a while, learn to drive and start doing something about increasing power! Enjoy the ride! --John