ok i have a th350 transmission from an 81 chevy C-10 pickup,
the truck was a factory 5.7L oldsmobile diesel and gm produced and installed this engine in their cars and 2wd 1/2 tons from 78-85 years,
http://tech.oldsgmail.com/eng_diesel.html
http://members.tripod.com/~A350Diesel/tech.html

the th350 in question has MX2 cast on the side of the case in large fashion, a unique large X stamped steel pan and its got the ten bolt bellhousing pattern that fits all gm divisions V-8's, and 3.8L and 4.3L V-6, and 230-292 straight six engines,

im 99% sure its one of those buick division stickered ones, i pulled one such trans just like it from an 83 5.7L diesel caprice classic once,

could or would this be a th375-B in reality ?

what internal parts would be different in this one than in a normal gas th350 ? other than the torque converter?

where and how can i find out ?
i can get stamnping code info from the trans if need be

thanks for anything