gas tanks? what stock style is everyone using?

I have a spectra tank for my 67. It appears that spectra used the same tank bottom stamping all the way to 76 which will work fine, but is incorrect for a full on restoration. Its stamped for the single sideways strap used from i think 64 up to 67. 68 up had a different bottom stamping that was indented in 2 places for the double front to back straps. If your not concerned about how it looks from underneath it should work fine.