Just about to take out my 1994 wrx engine and replace it, But if i was to get a full sti engine (turbo, heads, and the other stuff) what else would i need to do it would have to be a phase 1 i take it for the sti ecu to fit my loom or is there more to it than that and i would be better off with a wrx of the same year ish up to 96 ?

 

if you replace same phase for same phase then I think it is just a drop in and play scenario, I think you can also drop a phase 1.5 in as well, but a phase 2 needs some things changing (although cant remember what)