I'm currently using 28x10.5 full slicks with front runners, so I'll make them fit. My father in law has a XD fairmont that he will give me, so if leafs are the go then I'll probably do the 500km round trip and pick it up.
Here is the current setup in action just last weekend:
http://www.youtube.com/watch?v=PhJAqnZPngM&feature=plcp