Has anyone, or know anyone, who has tried a GearVendors unit. I have a 727 with a TF2 shift kit, 8-3/4 S.G. rear w/3.55 gears. Has anyone had any problems or concerns with this? Would love to have an OD in my 73 Dart. Would prefer NOT to do surgery to fit a bigger trans in the tunnel. THe GV seems like it would be a good upgrade (3 gears to six with an OD) and more affordable than one of those Keisler kits. And certainly don't want to put a GM trans in my car. I have a 741 case and they only make 3.55 and 3.73 gears for it. I looked at their gear chart and in the 3rd over a 3.55 reduces to 2.77, that would be perfect for me with the longer trips. THanks guys, all input is appreciated on installation, driveshaft angles, or electrical?