Just picked one up at the wreckers. gm made the canisters. Use Mid 1970 to early 1980 canisters. Same dimensions . You might have to look hard for the right amount of ports on the top. I found one in a pickup. Also I found Cadillacs were a good choice to start with. I spent months looking for a canister until a jeep shop turned me onto this. $14.00.
RT