Kitty Cat Snowmobiles

I have a 1973 kitty cat. I want to put a new engine in. Either a tecumpseh or honda for the reliability and parts availabilty.

My question is, is 5 h.p. ok for these sleds . I can get a really good deal on a tecumpseh 6.5hp (same dimensions as the 5 h.p. Do you think the machine will handle it My kids are 4&6 so I will be governing it down a lot.

Thanks in advance for any help you can give me. Brad

somebody must have done this. What is the h.p. rating of the original kawasaki motor?

If it fits put it in !