So,we got to drive the Barracuda for an hour on Saturday and when we pulled into the garage,we were leaking gas everywhere! Come to find out,the fuel filler neck grommet was rotten. I called everyone in town and no one could find one for the 64. The Chrysler dealer had one for the 67 up but nothing lower. I wasn't sure if that would fit so I kept looking. Called all the gas tank suppliers,radiator shops,nothing. Finally,someone mentioned the Paddock,and they just happen to be nearby. I gave them a call and they just this month started carying the correct grommet for 17.00$. The part # isQE473 and fits 63-66 A bodies. So,hopefully,this won't happen to you but if it does,you won't have the headaches I had from it!