You silly kids on the east coast. Skinny skis and short tracks.
BTW, a 136" track is not a "long-track" conversion. 144, sure, but when you can buy 162" tracks stock, you're just lying to yourself.
Anyhow, back to your regular programming.
You'd be better off with a brand new '06 Summit 550 Fan with a 136" track for under $6k if you are going to be stupid enough to buy that 800 with a fucking 128" track on it. What a joke!
When you're ready to buy a real mountain sled, with a real mountain track on it, come back.
Retail on Salomon S Gun Lab's at Al's Ski Barn is $1299 with S916's. http://www.untracked.com/highlight-176043.html
Proform price happens to be exactly... $650.