F8ck it. Instead of buying a beater (RX-7, S2000, e46 M3) for a dedicated track car, I'm turning my e92 into a track car. Purchasing a BBK today and then will start looking at springs, camber plates, corner balancing and of course, tires.
But thanks for all the input/insight guys.
Daily: 2013 e92 M3 MW FR DCT ZCP / ESS VT2 650 S/C, MRF mid/Akra slip, ST BBK
Track/Airstrip: 2011 997.2 Turbo S PDK / GIAC tuned / Ohlins coils+LCAs+endlinks setup by BBI Autosport
Beater: 2013 X5 3.5sport