Compatible transmission?

Posted: 15 Feb 2014 05:09 AM PST

This is kind of a scrub question because i know almost nothing about cars, but i have an old military k5 blazer with a cummins 5L diesel V8 engine. I need to replace the transmission. Is a Lenoco CS1 transmission compatible? If not what are the best transmissions available that are compatible (ignoring the prices)?