I just tried to put my new Gas tank in the 69. It fit in the opening and the screws all lined up just fine, but the filler neck opening is about an inch too close to the back of the car. After doing a search I've read that people can put tanks from 69 and 70 in earlier year cars with only the length of the filler neck to be changed. If this is the only differance than I guess my American Design repop is just made wrong. Should I send it back or is there something else that I'm missing?