iight so im looking around for a wrx tranny for an EJ22 i am wondering a few things

my buddy has got impreza L and its stock... he wants a manual tranny. Hes gunna end up doing an engine swapp waht do you guys recomend. for him to get he wants to make the car run at about 350 hp in the long run...so

on a side note the 22b body kit is complete!!!!!1
http://www.aerosim-research.com/subaru_wide.html

thanks alot everyone!