THIS SALE IS FOR A. MOST COMONNLY USED ON… CONTINENTAL…. io-470/IO-520 OR 470/0-520. THIS UNIT LOOKS AWESOME. WE ARE THE REAL BRICK AND MORTAR WENTWORTH AIRCRAFT YOU HAVE SEEN ADVERTISED ON PAGE 6 OF TRADE-A-PLANE, AT OUR BOOTHS AT OSHKOSH, SUN-AND-FUN, AOPA, AND ELSEWHERE FOR YEARS!!!! PLEASE DON’T ASSUME. IF YOU ARE NOT SURE ABOUT ANY FACET OF ONE OF OUR LISTINGS, PLEASE ASK!