[The cap'n]

The cam gears are numbered in sizes -4 through +4, and the size is important. Stamped on the side of the gear. If you need a piston, I need to know the manufacturer of the piston/cylinder set. Most common are K&S, Mahle, ISS, and NPR. There are also some other brands, such as Shasta, Jahns, and MC. It'll be identified somewhere on the inside of the piston. I'll also need to know the width of the ring grooves, and whether there's a cast in reinforcing band.