[Woodz428]

I've used them behind flatheads and lower torque engines, not so sure that it will last long behind that engine. They are basicly a top loader redesigned with an OD 4th gear, they also have internal changes that are designed for ATF oils instead of the old 80/90W. There were 2 basic types, one with internal shifter and one with external. The ones I have seen all have aluminum cases.