Thanks! I've already been in contact with Dr. Diff and Passon. I'm thinking I'll stick with a 4 speed. I went for the overdrive in my last car and never really took advantage of it going to local car shows and stomping the throttle as often as possible. The US Car Tool Chassis stiffening and leaf relocation kits arrived yesterday (Purchased from Scott at Harms Auto. Super fast service and shipping!) I have a rotisserie here but hearing mixed reviews on how much welding should be done with it on the rotisserie and how much should be done before and after the drive train is in place. .. Just another excuse to scour the pages here.