it can’t be that hardThe TR3650 bolts up just fine. All modular transmissions will. It took me two years to get mine running just because i didn't have much time to work on it and no garage. I can guarantee this is not a weekend swap, its too much fabrication work even if you go with the t45.
Reverse engineering is my specialty in the Fabrication department.All I want to know is witch year 4.6 Mustang transmission will bolt up to my 95 4.6 Tbirdlike mechman1984 said, its a lot of work, so stick with an auto unless you're good at fabrication and have good ingenuity