Any gas cap listed for a 67-71 truck will work. '72 is when the EEC crap came out. I'm having a problem finding a vented cap for the tank I have, which came out of a '72 C10 that had the damn EEC hoses and the vent up in the cab. I really wanted to keep the original '70 tank and get it cleaned and sealed, but that idea didn't fly with Dad.
