I sold about 4 kits already for this one on my website, temporarily disabled the stock until I see how this kickstarter project turns out.
http://spykerworkshop.webs.com/order

I have a long running thread on the snow cat forums here http://s1.zetaboards.com/RCsnowcats/...749076/20/#new

I'm not sure if it would fit a Sherman because its about 14" wide right now lol

It's around 3-4lbs when its all assembled.

https://www.youtube.com/watch?v=c0xcDeq9GaY