Transmission question

Can anyone give me any info on this tranny. I''m looking to replace the OD833 in my dodge truck with a 833 from a B-body. Thanks Chris
http://louisville.craigslist.org/pts/1654415674.html

Judging by the mount position and the raised data pad on the case it's a '68 or '69 B body.

Thanks thats the tranny I'm wanting, if indeed it is a 68-69 B-body 833 is it worth the 350 asking price.