Downing Atlanta would be the way to go. Its a great kit thats simple to upgrade. Over on Bf.c there's a member with about 238 whp at 15lbs on stock internals. They have great potential.
Current standings: 98 M3 Track car
Mods: suspension, i/e/fly only
1/4th mile: 13.7@101 on 235/40 streets
Rd Atlanta: 1:44's on RA1's, 1:46 st.trs
95 M3 3.2obd1