The fuel tank on my ‘76 has a rear mount that doesn’t appear to be the same as other bikes I’ve looked at. All the parts listings I’ve seen show a rubber mount like tge one shown in the first photo. My tank doesn’t gave this large rubber piece, but had what looks like a simple grommet (similar to photo #2 but flatter) in the hole at the end of the tank. This mount fits well onto the mounting post on the frame but I’m wondering if I should be getting the “proper” rubber mount for it? I can post actual pics later today.