I did a 15 with the 3 inch track upgrade for $1000. The front end does not seem worth it at this point (have ridden a couple 16's) and all clutches wear out so you will replace them or rebuild them all eventually so do the clutch upgrade when the time comes. Even with the track I saved about 4...
Tore the crap out of my side panels on my 12 14 and 15. Never bogged down. I take all the foam out so it doesn't get all over everything. Can't imagine it bogging. Was it sucking snow?