There is a "Chrysler fuel nut" that is still available from any parts house that will look up old car parts. That will replace the male fitting on the end of the fuel line. If you've messed up the female fitting on the tank, that's another problem. Because of the metal fuel line going directly to the tank without a short rubber bit as on later cars, I've found that it's nearly impossible not to strip the nut. Cheers, Roger