Changing the Gas Tank

[6685]

Will a 76' gas tank line up on a 77' frame?  Thanks.

[Re-run]

That tanks from 69-78 all have the same mount. The problem comes in the seat/tank fitting.
I cant remember which way it goes for sure but I think if you swap out the 77 tank for a 76, there will be a small gap between the seat and tank. I think.