I have a friend who is making his 04 Mach I full race and pulling out his stock motor with less than 10k on it.

Will this drop in an 03 GT without problems?

 

motor will fit..perfect. You will need to use his PCM or get yours reflashed for the 4V parameters.

Adam

 

so just reflash?...no new comp or wiring harnesses?

 

if you get your pcm re flashed for the 4 valve then you are going to have to rig up your 2 valve harness to work with the 4 valve harness. im sure there is a tutorial some where. just do some research on the internet or somethin. i doubt too many people from this forum has attemted something like this.