I would just read up on a desired class rules
I plan on returning to AL ASAP. In so doing I think I shall build up a spec E30 car as it is sooo cheap, and/or buy an e36 race car, in the next year. My current M3 is pretty well tracked out but, it's not a race car... and I don't want to make it so, sentimental.
I am to the point now in my learning that I need something faster to improve, or lighter. Lord knows a spec Miata could teach me something, but a spec e30 sounds funner at least it has more torque. Since I like BMW I will stick with them.
I need a competition license.
I have yet to use Hohos or Toyo RA1/888 so I could learn something from that experience as well.
GC RTAB shims, RSMs, T/S Coilover with Koni DA f/SA R & 450#f/550#r Eibach ERS
Eyeball Arm CA mounts
Sunbelt CAMS w chip for 24# injectors, Euro MAF, Conforti/ITG CAI
96+ exhaust manifolds
Euro fLoAtErS, Ferodo DS2500
M roadster lever
All done in my garage