Well actually I am going with the 4l80e. My brother inlaw has one in his garage and is going to let me have it real cheap. I am picking it up saturday. As much as I wanted a 6 speed ,I want the best of both world's. With the 4l80e I can still have a tranny break, and overdrive.So as long as I can a tranny shop to build it this week then I will be running again next weekend!