E46 M3 Grattan Raceway  

Build:
3450lb w/driver 270whp
Stock powertrain no aero
265/35/18 Square Yokohama A052 200tw
ISC Single Adjustable shocks with 12k rear 10k front spring ( too stiff for no aero)
Turner Motorsports Sway bar F&R
Supersprint Rear Muffler with custom cut-out valve.