not sure who makes it but my old man always ran and swore by brute power clutches. They always lasted and held up forever with whatever he put one in. he had one in a 79 ford with 35's and dana's front and back, 302 and could turn em over easy, and also had one in a 76 c10 with a built 350 and 3 speed, 31 10.50's and could smoke them off. Had one in his stock 2.8 s1- and lasted the life of the truck.