I don't remember exactly what I did for a gear when I did the conversion to a T5 in '93. I used a spare '68 bell housing, the adapter plate, the yoke that came with the trans (pulled it myself from a newly wrecked '93 GT) and modified the rear mount. I had to have the drive shaft shortened and the DS shop fitted a spread-dimension front universal to adapt the yoke to my DS. The prior weekend I'd installed a 3.40 tractionlock rear end. And, man, the T5 just brought it all together. Oh, I had an 11" drilled flywheel lying around (from an early 400 SBF) and put in an 11" Qualitee diaphragm clutch set. I didn't worry about the back up lights; I control them with a micro switch under the dash.