I have used PTC for several years, happy with the converter and the service. A job transfer took me to Wichita, Kansas. Neal Chance's shop is right here, so when the converter needed to be freshened, I decided to give them a shot. I spoke directly with Marty Chance, and after looking at all the car and motor specs, the only change he wanted to make was going to a billet stator, and a small stall adjustment.
Performance wise, the car picked up a couple of hundredths in both 60 feet and on the big end. The rpm dropped off two hundred less between shifts. The biggest difference I noticed was in temperature. The updates Marty recommended yielded about a 20 degree drop in attained temperature during the run. I don't really know if that's good or bad, but I like it. I haven't changed anything else, but having the shop so close and actually being able to visit and talk directly with someone is great.