UP FOR AUCTION IS A SET OF 1967 CHEVY DOUBLE HUMP CYLINDER HEADS # 3890462 FOR VARIOUS CHEVY VEHICLES LIKE CORVETTE CAMARO CHEVELLE NOVA OR IMPALA. THESE HEADS ARE IN VERY CLEAN CONDITION AND WERE WERE REMOVED FROM A VERY LOW MILEAGE ENGINE. THEY SEEM TO BE ALMOST RECENTLY REBUILT. HARD TO FIND A NICE SET AS THESE. THEY ARE COMPLETE WITH ROCKERS, SPRINGS AND VALVES. GOOD LUCK.