Choose between round back tank Fairlane style or notch back muscle car style. They feature 3” diameter axle tubes, and CNC machined face flange, for a flat, leak-free seal - all joined together with strong, attractive welds. Features: Heavy duty RTS quality Nostalgic smooth round back style as used in Ford Fairlane or 65/66 GT350 Mustang CNC Machined Face 3" Axle Tube