Ok, so here's the floorplan:
It sounds like you want to do what? Remove the pantry and fridge in the kitchen? Isn't the wall still in the way of loading your Can Am?
However, isn't the 12' garage long enough for the Spyder to fit in?
As for ordering panels + trim from the dealer, the problem usually isn't the cost of the item but of the cost of shipping. Someone else got a quote saying that a 9' piece of trim was $60 but $100 for freight shipping. Sometimes you can get the dealer to talk to the manufacturer to throw items inside of a unit on order - takes longer, but you beat the shipping cost.