saw this coming from a mile away.. anywho

1 power adder (you going to get into limiting the "size" of said power adder? (i.e. can I run a fogger since you are running an 82mm turbo?,etc) or limit the "amount" of boost/nitrous that can be run? (extremely hard to check/police)
cubic inch/weight limit (big blocks allowed?)
10.5 x 28 max tire (no ws) or a certain size DR
stock suspension (no rear coilovers)
transbrakes (letting a 5spd car eat with a clutch is the same thing)
then if you want to filter it further, then make the street equipment mandatory... but you know how that goes..


just suggestions, good luck.