The trans. will fit useing a 63-72 bell housing.
It will not last long with that kind of power
& the ratios are wide. It would not be a real
good driver. You might use a 4Speed car type trans.
or a 5-speed from a late model chev. truck.
Any drive shaft shop can modify the drive shaft.
What about the E-brake. Is it on the back of
the trans.?