by Dropz » Wed Aug 15, 2012 11:13 pm
The wiring will most likely be different due to different heads and later model Subaru's have air pump systems etc.
The best way to approach it is to remove your engine, put your current heads and manifolds on the my07 block with new gaskets and refit it, then sell the my07 heads/manifolds/etc.
Built not bought, it's a way of life.