I'm new to the forum and hoping someone here can help me out. I have a friend with a '03 GT with a vin code X (4.6) engine w/5spd which he grenaded. We have a chance to buy a low mileage 4.6 SOHC vin code V (flex fuel) out of a wrecked '09 Crown Vic (police interceptor). Both engines appear to be Romeo built by counting the valve cover bolts. We fully expect that we will have to swap over most of the parts...manifolds, oil pan and etc. So my question is are the long blocks interchangeable between these two car models? Thanks.