Don't know if anybody already knew this but I was trying to find a cheap top end kit with standard size pistons for my 96 monte carlo. WSM stopped making the standard size piston kit for the 900 and the one from weisco didn't include the cage bearings.......it was also $300+ bucks. Well I did some research and took the chance on buying a kit designated for the thundercat 900 snowmobile (of the same year). They are identical!!!! Gaskets pistons and cage bearings are all the same.....The biggest thing was price.....complete kit $220 dollars on EBAY....includes SPI pistons complete top end gaskets and cage bearings......installed them fired it up and road for about 2 hours....Flawless.......hope this helps somebody get back on the water....