Sorry it took me so long to get on this...All the info you are hearing tho is very good. I would also stay away from stage 5 wheel I have a 3, I have a t3/04e 60-1 .63a/r. Me and my friends at home all have the same setups, but most with a dif turbo...this turbo has really seemed to be the best choice for a b18c. b16 doesnt spool as nice with it, still nice though. As for your HP goals, you would def need to go strait t4 probably a t04s would be nice for that HP. I havent seen any 500hp t3/04s not that there arent any its just not the best way to do it. I would also try to find something other than the hondata. Yes the hondata is a great unit, but it is nicer to have something that is always user tunable at all times with a laptop without having to burn rom chips. The AEM EMS...is a hard system to get used to and get the base maps down but the thing it self is an incredible unit that out performs any other for the price. This is just my opinion though.

How much boost do you plan to run?