When I try to buy a new gas tank everyone shows a rear 30 gal square tank for the 2 door. My tank for the 4 door goes above the driver side rear axel. No one seems to list this tank. They show the side mount front style for the 96 k1500 a 34 gal and a 26 gal for the short bed. Will one of these fit. Or does anyone have any experience with this or idies thanks.