Based on the name and location FATSCO is probably affiliated with Fisher Auto Transmission, located right nearby in Fairfield, NJ. Fisher would rebuild most classic transmissions and they had a good reputation. They rebuilt my 1952 Packard's Ultramatic more than 40 years ago, and they got it right when another failed miserably. Unfortunately the old timers who worked on the classics back then are now probably all below the frost line.