big ass I/C with ***PROPER*** ducting... duct your oil coolers properly.., a cooler w/ a shitty duct doesn't do anything. trust me here, RX7s are the hottest running thing on the track.you'll probably need to upgrade your fuel pump too. Go for overkill on the injectors.tune to the rich/safe side...You don't need maximum power out there, you do need reliable however. I don't know about the H2o sprayer...i've thought about doing it as well, but if you run out....you just lost your margin of error that you were depending on. that all i can think of in my state of turkey-induced-coma