(CO/70/031) THIS IS A SET OF NEW OLD STOCK SCREAMIN EAGLE CNC PORTED CYLINDER HEADS FOR TWIN CAM MOTORS. CASTING NUMBERS ON THE FRONT HEAD ARE 16901-99 AND 16902-99 ON THE REAR HEAD. BOTH HAVE ROUND INTAKE PORTS. ALL GASKET SURFACES ARE UN-DAMAGED. I DO NOT KNOW WHICH KIT THESE HEADS CAME FROM BUT MY BEST GUESS IS THEY ARE FOR 107" OR 110" MOTORS. SOLD AS IS. HANDLING CHARGES INCLUDE INSURANCE. PLEASE LOOK CAREFULLY AT ALL THE PICTURES AND ASK QUESTIONS BEFORE BIDDING.