The 3.8 uses a different tooth fly wheel its 164 that means you need to use the 3.8 starter and the correct tooth fly wheel. Ford put the 164 tooth in a lot of different things so as long as its the correct weight for your engine you will be fine. Other than that the 3.8 stuff will work with a 302 no issues.But the 3.8L stuff will all fit correct? So If I find a 3.8L with a 5 speed it will be a T5 and everything from the flywheel back will work. Fly wheels are the same so the front balancer works or will I have to do something with the balancer????