I have the same rear tires but with 9 inch rims (and they fit nice on the rim)...
By me eyeballing the tire with tape measure, it's about 10 to 10.25 inches total sidewall to sidewall width (not tread width); . The fender is 12 inches wide and there looks to be over an inch of room on the inside. You'd need an inch (25 millimeters) of additional backspace to keep the rim flush with the outside fender lip... as mine is in the pics.
With all that being said, due to the cost of rims and any tire movement due to suspension travel, I'd figure out a way to make sure before purchasing... though it would likely be ok, I'd hate to steer you wrong.
I've seen wider rims (slicks) on S2Ks but it's been 15inch diameter and they've stuck out. I know Kevin has ran 17inch slicks but don't know how wide the rims were.
Just remember it'll really be for looks as our cars don't need that much rubber unless supercharged... good luck!