I didn't think they made 4 speed mustangs in '87. I may be wrong but i think they started using T5's exclusively from '87 up in both 5.0's and 2.3's. Not that it really matters since you'll end up replacing it whether it's a T5 or not (4 cyl. T5's are not strong enough to stand up to the torque of a V8 in abusive situations)
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