MUSTANGS PLUS , MUSTANGS UNLIMITED and NPD , have sections of their catalogs devoted to this swap . I have a T5 in my 70 behind a 351C . i used the bellhousing that came with the trans from an 86 GT . My car had a C4 and the driveshaft was the right length but i had to swap the yoke . One word of caution using the newer style bell housing is that you have to use a 157 tooth flywheel and small starter .one good thing is that the shifter comes right up through the stock hole in the floor .