Trans is a fresh rebuild, and it is the "Hemi" 4 speed. My dad had it build for drag racing. He has the synchronizers modified, something about every other tooth removed. I think the 3rd member on the 8 3/4 is a posi that has been rebuilt. I figured the trans would hold up if they were behind Hemi's. I guess if it breaks I will have to upgrade to a Lenco and Dana 60. Just kidding, don't really want to do that...