AEE only sold two different Sportster tanks and only both styles at the same time for a short while. This picture is from the Summer 1971 catalog and shows both types. We had just added the white gel tank with the vertical tabs (the other tank disappeared after this) and kept it in the catalog for a few years. It was the only fibergalss tank we had other than a skull tank for a short while and later a coffin tank for a while. We always had both the banana and peanut tanks in steel (some were Wassell tanks but most were knock off's from Hap Jones, Rocky and others that made them). And of course the famous wing tank which we never called that! It was a "custom contour tank". I never was a fan of the fibergalss sportster tank but Lenny our parts manager ran one on his ex-cop shovelhead and it seemed to work well plus it had a killer paint job on it.