I have a complete turbo system that was originaly set up for a Artic Cat ZR 600. 53 series turbo good bearings and fins are perfect. any interest out there for this system sold new for $2995.00 Make an offer.
It could be made to fit about any sled if you have the means to modify some of the pieces. I don't know that the 53 series turbo would develope enough boost to make you happy on an 800. There are some people out there that have more experience with these than I have that could better answer your question. Thanks for your inquiry!