Need some advices

[sr20-thoj]

Im currently rounding up parts for my sr build. So far this is what I have :

Gt3076rpeakboost manifoldhks step 2 272/272 w/adjust. camsbc valve springs/retainersgreddy rascometic headgasket

waiting on:86.5mm cp pistons/eagle rodsenthalpy tune

Basically I need some advices on what more to get. looking for a external waste gate but not sure if I should get the 38 or 44mm. Also thinking between 740 or 850cc injectors. What kind of fpr should I get. will the nismo fpr be fine? Any advice helps. Looking to get 350-400 hp tops..

[Justin35ll]

I havn't heard many good things about the nismo fpr's