727 C body-A body?

All car and light truck torqueflites are long tailshaft and the same physical dimensions. Short shaft versions were only used in HD vehicles.

There is only 1 thing I can think of that may be a issue with using the C-body trans. and that is some of the extension housings didn't have the cast on ears that the floor shift lower bracket bolts on to. If you have a column shift or aftermarket shifter you don't need them, just when your car is a factory floor shift.