I'd like to put my 2cents in on the whole have you tested it thing. I've never even built a 250 single cylinder with the thought in my head that this may not work. Brad is not re-inventing the wheel here, he is creating the 24" custom machined wheel vs the factory 13" steely. He doesn't have a bean counter standing behind him holding him back and an advertising team saying hurry up, with a procurement guy searching for the cheapest way for somebody who doesnt know what a sled is to build it. Brad and his team all ride sleds, those sleds will have these motors, people know who they are and they will not last a week in this business if it doesn't deliver. Now there's a certain pinky/purple anodizing color that has forced Brad to even go down this road in the first place, and he is putting himself in the public eye knowing full well the repercussions if he sends you junk. Remember there is another company charging $4G plus for only 60cc more and while those motors may be impressive they won't(shouldn't) hold a candle to an 1100, all things being equal as far as porting and pipe. KUDOS to you Brad and everyone on your team for stepping up to the plate with new and very exciting goodies for the polaris team, theres enough of your gear running around for pre-orders to be piling up without even having any on the snow.
