[unruhjonny]

I'm going to give this a bump, because I realized that I neglected to mention two other things;

1) As I have understood it, the 'B' gear set transmissions were always set up for a floor shifter (which would explain why the 70-71 Firebird ordering shows it as a "floor shift only");

The tail housings are cast with and without provisions for a floor shifter, so odds are if you found a donor truck transmission, it will not have provisions to mount a shifter.

2) the trucks used a larger OD front bearing retainer, so cars need the smaller one - unless you plan on using a truck bellhousing.

Casting numbers are sometimes REALLY hard to read on these castings, so I am giving multiple numbers, incase one or more of them is incorrect:

Tail housing w/column shift: 3968038 / 3911984
Tail housing w/floor shift: 3911942

Truck front bearing retainer: 3825635
Car front bearing retainer: 3911837 / 3911872 / 3911976*

* = this is a part number taken from a GM parts catalogue.