I would keep searching for a 89 up T5 from a V8 car, I would hate for you to wind up spending more money down the road. The 4cyl trannies just are not the bestt choice out there. The main thing is they are a little weaker due to the gear ratio's when paired with the V8. If you do go with this tranny be advised that you need to change the pilot bearing, I read something about the Thinderbird turbo coupe's T5 vs a 4cyl mustangs T5.. The turbo coupe's T5 have a larger dia. front bearing and require a specific retainer, you would have to search more on this or maybe someone on here could shed some more light on it. My advise is just try and get a V8 T5 and save yourself the headaches of a 4cyl T5. Best of luck.