i am about to do something similar too this. This is what i know and have already any info on what else or what u recommend would be nice. im using my stock 22e with 22e head on it with td-04 turbo with wrx up-pipe and 3 in downpipe with wrx top mount with 22t injectors. i guess what im asking is what else will i need i know i need engine management and im going with the pp6 and im going with walbro fuel pump. so what else is needed thx guys.