So my buddy put a z1 engine in his rzrs . But i think two stroke is the way to go . Don't get me wrong his z1 is bad to the bone . But i want two stroke . So what sled would you guys go with in the two stroke world . I think the fusion 900 from polaris is the best bet . Because the power it puts out and the size and the intake and exhaust ports . The best part is there is a turbo kit for it already .