Time to bring a tape measure with you!
If they'll let you get close enough, find out what the backspacing on those rear wheels is. That'll answer my questions.
I'm not a big fan of the huge rims either. I'd be happy with 17" rims and nice fat Coopers. RWL, of course.
Ooooh.... IDEA!! If you can, get a straight side shot of it (like
this one, only more space at the front and back). I'll photoshop in a rear wing and 17" American Mag Torque Thrust wheels and Cooper tires.