1 a gt2871r will not make 500 hp
2. AEM is cool, but over priced, you still wont pass emissions when you can get a hondata or crome system to do the same thing.
3. Use name brand parts for things like turbo,wastegate,bov.
4. injectors 450cc or above as stated, but for a stock motor you will be fine with max 560cc's as you probably don't want to blow it up running more than 12 psi.
5. If you intend on running more than 12 psi you will need a new map sensor.
6. t3 framed turbo small exhaust housing,quick spool,decent powerband since you cant rev out far.