Here's my track rat, a 1990 M3 autocrossing at Blackhawk Farms Raceway. Modifications and improvements include the following:

• Turner Motorsports chip
• Amsoil foam air filter,
• Ireland Engineering 8mm plug wires,
• oil pan baffle,
• aluminum control arms with offset Powerflex urethane bushings,
• camber correction front strut mounts,
• Bimmerworld adjustable camber plates,
• Sparco front stress bar, brake ducts,
• Hawk HP Plus autocross pads,
• Bilstein HD shocks,
• heavy duty rear shock mounts,
• Ireland Engineering 25mm front and 22mm rear adjustable anti-roll bars with welded reinforcements,
• Momo Competition steering wheel,
• pedal kit,
• Schroth 4-point harnesses,
• Vintage Sports and Racing high-flow cat,
• Borla exhaust,
• and (soon) Odyssey lightweight dry cell battery.

Oh, yes, thanks to a partial roll at Blackhawk, we've got a new door and front fender.

John Smith