Im starting to play with my 1st mustang. i found a 95 body that had a 3.8 in it but the body is like it rolled outa the showroom. however id like to get a 5.0 into it. im just curious if its worth it or not and if so. will any of the wiring work or all of it? just replace the ECU.
The car is a manual tranny if it matters

I didnt find a thread on this so if there is one i would appreciate it.

Any advise will be greatful

Thanks Mike