I used parts from an early 70's Ford Pickup. If the driver side is bad. Get the driver side out of the pickup. It has been along time since I did it. I wrote up something for Killer Frogs. He may still have it somewhere. I seem to have deleted it. It was back in 2008. One of my Pm's to Killer said I used a 14mm deep socket for something. Probably for the reassembly of the retracter spring.
The u-pullit yard wasn't too happy when they saw I had cut up seat belts to get the spring etc out of the retracters.