My 1975 Ghia emits a very strong gas odor after driving. It dissipates in about and hour and no odor after that. Checked for leaks around carb, fuel lines etc. and found nothing. Suspect the carbon canister since it has never been replaced (original owner). Anyone know where I can get a replacement? Have not located it yet. I understand it has a hose that leads to the gas tank. Is the canister mounted on the left frame rail?