If you are interested or thinking of cryogenicing your sled motor or any other parts Sub Zero Cryogenics is the company to go with or at least give them a call for a good quote. Paul knows his stuff and is the premier race engine builder. He does tons of engine building and cryo work for some of the top race teams, custom bike shops and etc.
If you are thinking of doing cryoing he will tell it like it is and not just to get your business. He knows engines and I would not go to anyone else.
Also, Here is a good post I started on Snowest with questions and answers for those of you interested or need more info on cryogenics. It is amazing what you are able to achieve with this thermal molecular stabilization proces. Snowest Cryogenic Post
If you are thinking of doing cryoing he will tell it like it is and not just to get your business. He knows engines and I would not go to anyone else.
Also, Here is a good post I started on Snowest with questions and answers for those of you interested or need more info on cryogenics. It is amazing what you are able to achieve with this thermal molecular stabilization proces. Snowest Cryogenic Post