well if your going to use it as a dd and rally then your gonna want to build around rally. so the first thing for rally races i would worry about is suspension because it will take a beaten. then do few bolt on parts such as exhaust, ignition parts, trottle body, ect ect...you will also want a better flywheel and clutch. a good tune after some of those bolt ons will help a good amount. for a tune as always i would suggest tom. you will need a wideband air/fuel gauge.
hn155: Rockford punch pro speakers, t400.4 deh 80prs, full audio build to come. working towards 175hp n/a, simple but fun.