right going to put and ecu into my car what1 guys (92 typeRA)

Z4 = 95/96 wrx 260bhp
Z5 = 95/96 wrx typeRA 260bhp

i was going to use the Z4 untill some1 that knows there stuff said i should be useing z5 . ......when i look at the ecu chart it dose make sence Z5=RA.

so is it a Z5 i should be hunting for yeh and just and just got myselff muddeld up