Greetings, I just finished my 300Dt auto to a 5spd conversion and also had to deal with the tranny bracket situation. my solution was to add 1/4" x 2" or 2 1/2" x 7" (i think) steel extenders to each side of the tranny bracket to make it line up with the rubber mount as it should. I had to fasten the steel pieces to the chassis clips with coutersunk flat head machine bolts (allen socket) to avoid overlap problems with the tranny mount fasteners. hope this helps. cheers, mark