Great Advice - Thank You! with that said are there different A904 Transmissions? Big Block "AND" Small block? I was also considering going with an A500 trans for the benefit of the OD for Highway cruising - Thoughts on this????
There are no big block 904's or A500's.
There are big and small block 727's and A518's though.
The A518 (46RH) did also come in diesel versions which can handle some real high torque, and pretty much all you have to do with those is swap the governor from a gas motor A518 into it. (they use different calibration)