dietcoke

I have a 93 rx7 with 32000mi on it and in great condition. Right now it has a RB air inlet duct, a greddy cat back, boost guage, and turbo timer. I want to get rid of the RB duct and get an M2 box, a downpipe, M2 (leaning towards medium) intercooler, fluidyne radiator, and then an m2 remapped ecu. I can't get the intercooler for a few months because i want to get the radiator and AST bypass kit before i put the rest of the stuff in. Should I wait to put the M2 air box, downpipe and intercooler in at the same time, or if i get the stage 3 ecu upgrade is it ok to have all the stuff in there and then drop the intercooler in next spring? Am i ready for these upgrades, or would it be smarter to get a knock sensor before i do this. Also, what would be the performance difference if i went with the large intercooler instead of the medium. Just one more, what is the best downpipe to get, are the manifold studs likely to break when I install it?



comments GREATLY appreciated



-thanks