Spectra Premium gas tank - Do they make a tank for 70 Duster

I ordered a CR11E
I will have to live with the nipple, at least it will fit right.
Assuming you have the vent line correctly hooked up at the filler tube on your 70 Duster you can just plug the vent fitting on your CR11E tank. Or better yet use it as a fuel return port in the future!