I bought a kit from Dr. Diff for my power lock with a 3.55 gear set. I'm going to leave the car on jack stands for a little while long as I'm thinking of going to the Magnumforce 4 link setup. So I will need to weld on tabs for the links first if I do it. I have been side tracked on working on the GTX as the wifes 03 Dakota R/T that we bought new was totaled when she was sitting at a stop light. She was pissed but she is happy now since we bought here a 07 BMW X5 loaded with the sport package. Guess what I get to do on a used car, Yes work on it so the GTX sits a little longer.