Grigg is right! Avoid the Chinese junk. Their metal is too soft and don't last long. Same with ball joints, rotors, tie rod ends, master cylinders, water pumps, radiators, heater cores and cheap starters/alternators and such. They are cheaper in more than one way. Buy American if at all possible. Stick with name brands like Raybestos, Wagner, A-1 Cardone, genuine GM parts and such. Just make sure they are made here and not over there. Many farm their work to the Asians. So you have to be careful. Of course in an emergency they will work..........well sort of. I wish you well on your rebuild of that 57'. Keep em' rolling.