I have a few questions about 1980 gas tanks. My hatchback has 4 torx screws holding on the fuel filler, my sedan delivery has only 3. (under the gas cap when you take it off). Also Summit racing says the fuel tanks they sell will fit both the hatchback and the wagon. I understand they are different tanks. I am doing tank work to start to drive my S/D this summer., which has a leaky tank. Any help would be appreciated! Thanks.