There is evidently something unique about that 65 tank because on all the sites I looked at they jump right over it and have them for other years. I think the best bet is to just find a used tank in reasonable condition and have it hot tanked and sloshed. Not sure if they still line tanks that way as the new gasolines eat up everything in sight.

As Kurt suggested, hit up some of the wrecking yards in the West as they will be in better condition than those from the rust belt.

Don