Our Standard Model is designed to operate correctly with any Classic 240-33 Ohm fuel gauge. It easily adjusts to tank depths of 6" to 24" with the standard five-screw mounting pattern. It includes a cork gasket, float assembly, mounting screws, and instructions. Designed to match tank sender openings with a minimum 1-1/2 inch center hole surrounded by a standard aftermarket 5-hole offset mounting bolt pattern.