OK.... I got these parts from a guy that is all about engines and horsepower... big horsepower. He was messing with the skis for a guy that just had $$ obviously. Question on the bore size of these cylinders for the 951. I assume he was planning on putting them in the 98 XPL. They are freshly bored and straight so I know they have not been installed in an engine yet. Bore size (3.603") I'd have to look closer but the sleeve has plenty of meat left on the sides. I wonder if it was resleeved to accomodate the bore size. I'm just wondering about this. Who would waste time and expense boring a cylinder to this size if there was not specific application. I might have to go find the guy and talk to him about it. Was there and engine larger than the 951??