My dad just bought an older B&M hole shot torque converter for the mustang. Problem is, it wont fit. The torque converter that was in it only has 2 different sets of spline's (i think is the word), and the new one has 3. Could this be the reason it wont fit? All converters ive found say for 80-92 AOD trannies, But all we can come up with is it being a lock up/non lock up converter, but dont see how that would keep it from going on.