The sender for the AD 'burb and panel is next to impossible to find. You might be able to rebuild the one you have. The potentiometer might by swaped from a 49-54 tank in cab unit. Then you'll have to reconfigire the pick up tube and the float length. I've done that with my AD panel. To my knowledge and research, nobody sells the AD 'burb and panel sender unit for the gas tank as aftermarket. Good luck trying to find a good used one. NOS is next to impossible to find.( I've been looking for 20+ yrs.)