The Gear Vendors install thread
The amount of surgery obviously depends on the car and I don’t believe GV is an expert here. I know all I needed was a few smacks with the BFH but I have an E-Body so obviously the A’s are tighter. Glad it’s working. When I use manual mode I just turn it on for OD. As you have found out, trying to shift it 1over, 2over, 3over is gonna take some practice.