[71blksuper4x4]

I am not sure on the diameter of the filler tube on the gas tanks. There is a difference by just looking at the gaskets. This one (71-72) has what looks like 2 circles on the side that faces outside, the 67-70, are more plain looking and don't have that 2nd ridge. Hard to explain, but easy to spot looking at them. I will tell you though, boardmember here (ClassicHeartbeat) Wes, he has a few NOS 67-70 grommets that he said he would sell. He is getting a company to make them better than the ones most parts places carry right now. The ones on the market right now crack after a couple of months use because they cannot take oils or gasoline or weather for that matter. Hope this helps, Dave sorry I didn't mean to ruin a sell, but I believe he would have been unhappy if he has a different tank. Trevor