Swapping trans on a 68 need help

[David Fulford]

The T45 was used in mustangs after 95 when they went to the 4.6 motor.
I would say you could use it, but it would be harder and more expensive to find all necessary parts to go along with it.(bell housing, flywheel, etc.) I would stick with the T5. Try to find a worldclass. They sell out of summit brand new for $1100.00 You hear horror stories about the T5 all the time, about how they always break. I beleive most of the time, it's from people who don't take care of their cars, and/or have one that was built buy someone who didn't know what they were doing. I have a T-5 with the below mods and have put about 10,000 miles of pretty hard driving on it, including 2 trips to the track w/slicks. It's still fine. Sure if you dump your cluth from 5000 RPMS at every stop light, something will eventually break, but I think it is a good transmission. Do plenty of research before making your choice. There are other options especially if money isn't an issue. Good Luck