mmmmmmmmm, Contour power.
I had 235/40/17 tires on my '99 SE and I know Rick "Buckshot" had 245/45/16's on his SVT. Both required a significant amount of "massaging" on the rear wheelwells. Specifically, it's the rear bumper mounting tab that takes the most work to get those fatties to fit without rubbing all of the time. The fronts fit no problem though, so you should at least be able to get something for the track if you wanted to.