Yeah, I still buy Fairbanks shift kits from Superior. I've used both B&M as well as TransGo and found the Fairbanks to be "superior". Just my opinion, but the kits are less expensive than the other two and they WORK!
we borrowed a Fairbanks trans from Jim Hale back in the day , it wasn't worth a s--- , went back to B_M , parts in our own trans that my partner built . We had some trouble with B_M convertors too , but most were good ...jfyi