I did have the same thought, putting a turbo on a Viking.
Pull up to the line, and smoke the competition!
What a hoot that would be??? LOL... The ultimate sleeper!!!
There is certainly plenty of room under the hood for either a turbo, or supercharger.
In Canada, I have seen many Vikings as touring sleds.
Here is a photo of assorted Viking's and Venture's at a restaurant in Pohenemagook, Canada.
Another time, my buddy and I met up with a group of 4 sleds in Gaspe'. A Canadian with a Viking broke trail for about a 20 mile stretch during last years Feb 15th snow storm. I was impressed.
I would definitely want to put a winch on it somewhere, just in case.
In the near future, I'm really hoping that Yamaha will upgrade engines in both the RS Venture, and Viking models, and put in the fuel injected three holer. Seems to me that would be a logical progression, and get away from carbureted motors completely.
That would be on my wish list.
"All the best", in finding the sled that best suits your needs!