whats the best supporting mods like ? injectors ,turbo, manifold maf, ffp ? is it worth upgrade water pump/oil pump, what coils to run I heard r35 Gtr coils are pretty good ? what clutch to run ? lightweight fly wheel ? should I be changing to arp head stud as well as a MLS head gasket ? best radiator/intercooler ? any internal I need to be upgrading . wanting some lumpy cams all that good stuff cheers thanks in advance