What's an 833 o/d from a truck worth?

Actually, the tailshaft splines are not the same as a non-833 OD, they're the same as a 904. The truck OD's have a different OD ratio (.71) than the car OD's (.73). The shifter can be used on most mopars with some tweaking, but the linkage is useless for everything but certain B body's. Same with the truck shifter plate. And the shifters will all be of the slip-in style.

The truck transmissions do have the same mounting pads as the B/E bodies, and you can adapt the long tailshaft transmissions into an A body with a little work, there's an article on bigblockdart that shows how to do it- http://www.bigblockdart.com/techpages/abconv.shtml

Anyway, even if they're complete with shifter and everything you can only actually use about half of that stuff. And the truck versions are pretty common, as I already mentioned I've bought several for less than $200. I'd pay more for an A/F body OD, but they don't seem as common, and you can actually use all of the linkage attached to them.

Here's an article that covers all the info and differences on the 4 speeds, and spends a lot of time explaining how the OD transmissions are set up.

http://www.slantsix.org/articles/4-speeds/ODA833fourspeed1.htm