I have for sale a fuel vapor charcoal canister that I removed from a 1978 Pontiac Firebird. It should fit some other second generation (1970 to 1981) Firebird, Trans Am, and Camaro. It would have also been used in some late '70s Corvette, Malibu, and square body trucks. You may wish to confirm that this is correct for your specific application. It appears to me to be in decent condition. I removed it from a car which had been sitting for a number of years.
$74