Why stay away from the TCI stuff??
I used a TCI kit in a 727 in a 79 Dodge Power Wagon 4x4 mud drag truck with a 550 hp 440 that I built for a friend. The truck would roast all 4 tires on the road and held up 4-5 races a year plus daily driving for 6 years until the day he sold it (to help build his 71 Cuda)...after that I don't know.