Found this on Google – C-15453 trans and C-15095 on the TC is from a 1987 Chevy Pickup – also its a New Process A833, not a Muncie. Used in Dodge and GM trucks, produced in 2 and 4 wheel drive versions. Google the info, lots of pictures, see what matches. The new process has an NP stamped on nit. The posts I read, people did not like the gear ratios. Search Chevrolet and the C?-15453 number (couldn't see it that well in the picture) and you will get a lot of info.