get a real BBK shocks and springs at min wheels and tires
bigger oil pan if you had issues, and pcv reroute is a must for z32s so they dont puke and burn oil out exhaust. Sounds like you need to do a lot of track research and corrections before your next time out.
my modded na took down c6, s2k, z33,g37s
in these vids i had rsr springs, front and rear control arms, tension rods, tokico shocks, TT clutch jwt flywheel, AP 13.5 bbk in front, intake ecu, underdrive pulley, driveshaft. camber was 1.9ish 245 in front and 275s in rear