THESE ARE NICE PARTS. CYLINDER IS MINT. BORE IS 3.035 CYLINDER. RODS ARE MATCHED. PISTONS ARE MATCHED ARAIS SLIPPER. BOTH RODS AND PISTONS USE 20MM PINS WITH SPYROLOC CLIPS. PISTON DOMES ARE MADE FOR A CHANGED BIG VALVE HEAD, BUT HAVE ENOUGH MATERIAL THAT THEY CAN BE CUT DOWN TO USE A STD HEAD AS SHOWN IN ONE PHOTO, EVEN THOUGH PISTONS ARE NOT THE SAME THAT GO WITH CYLINDER. JUST THERE TO SHOW WHAT CAN BE DONE