well couldnt find the rules but if you are allowed to use any stock parts get you a set of pistons for a 2000 acura integra typeR or a 1999civic SI. The integra typeR pistons will net you about 11.9:1 compresion. If you mill .020 off the head and you are at 12.5:1 get you a intake cam from a B18B which is a non vtec integra form like 1999. if you do the piston change run 100octane or higher and get a set of 390cc injectors from a automatic turbo eclipse or talon. car will run a little rich but you should be ok and still fall into the stock parts rules with a unmodified ecu