It's my first attempt at this, I thought I'd just throw out an idea... but let's try:
-gt3
-only Miata/MX-5
-no "race mod" ie. "warpaint" (not sure if there are any LM "prize only" models out there so I just want to make it clear the cars should only wear dealer paint
-any mod desired for the rest (tranny, brakes, engine etc.)
-no hybrids, no gameshark mods etc.
-the tracks should be decided by the competitors
-2 separate classes, one NA, the other, Turbo... you could compete in either one or both
best thing of all:
since there's a real Spec Miata series out there and it's accessible, there are plenty of websites with setups and shops who build them and reccomend settings, would be interesting to see what's the quickest one