Anyone swap a Tremec T45 in their 67-69 Dart?

As stated above, the bellhousing is part of the front input cover and cannot be removed and another bellhousing bolted in its place. There is nothing wrong with the trans, my son has one in his supercharger 450whp 97 Cobra Mustang. Works great and has held up for the past 17 years. I am in the middle of installing a Tremec 3550 in my 72 Duster(I started a thread on here And so it begins,,,,,, 5-speed Duster swap! ) it’s not too bad of a swap, but requires some floor surgery. I’m learning as I go. Can’t wait to see how it drives, 3.91 gears with a 833 at highway speed is NO fun!