Thanks for the help guys and I apologize for the large pics - technology challenged at this end. Cab, the skirts go from about 4.242 to 4.247, the diameter at 90 degrees to the wrist pin is about 4.245 with the diameter at the wrist pin being 4.221 to 4.222. The pop up on top of the piston is about .060 high. I was looking for something with a bit more compression than a street wedge.