Ive got a 94 wrx which had a nocking engine, so got myself anther close deck engine that came from a 93wrx,
Ive fitted the engine all ok bar went to plug in the loom at the rear of the engine from the part out of the bulkhead and its different.

My engine has a one big grey plug but the bulkhead one has 4 plugs which one goes to the gearbox.
so went to remove the loom of my old headers and thats different to the one on my engine and wount go
Any surgestions??