your stock motor will be fine for those levels.
search around for either a GOOD, and i state again....GOOD turbo kit (not the e-gay special $799 turbo kit) and a form of engine management like crome or even hondata.
or you could go the custom kit way like MANY others, and have alot better room to expand in the future if you buy the right parts in the first place!!
either way it sounds like there is ALOT of stuff you need to start researching, so hit up the search engines and d-series related sites and all the answers to your questions will be there.
Good Luck!!

search around for either a GOOD, and i state again....GOOD turbo kit (not the e-gay special $799 turbo kit) and a form of engine management like crome or even hondata.
or you could go the custom kit way like MANY others, and have alot better room to expand in the future if you buy the right parts in the first place!!
either way it sounds like there is ALOT of stuff you need to start researching, so hit up the search engines and d-series related sites and all the answers to your questions will be there.
Good Luck!!