Special thanks to Mark Kafka for allowing me to repost his story.
Swapping a Muncie to a TREMEC GM TKO in a 1971 F-Body by M. Kafka
I am going to make this as short and brief as possible, I don't know how to rate the skill rating it takes for this install as I have changed spark plugs in late model cars that have been a bigger project than
this was. So what I am saying is if you know what end of a torque wrench goes on the bolt you can probably tackle this. Approximate time it took me to change out my Muncie to the TREMEC was about 10
Here is a view of what I got with the "GM package". It included the trans, speedo drive and matching gear for your axle ratio and tire size, brass plug already installed in neutral switch spot, a C6 slip yoke, and 3 quarts of synchromesh fluid and a plug in connector for the backup lights.
First off, obviously remove old trans and install your new clutch and pressure plate. I used a Centerforce 11" 26 spline 1 1/8" kit which was Summit part number ctf-n1716
and throw out bearing ctf-n1716. Price of about $265.