English wheel, oversized by and inch, and riveted into place, with a 'hide it in plain sight' paintjob i think is the most budget consious collaboration of all the suggestions thus far. My car is black, so a black panel will work quite nicely, and yeah, it's a race car, so a few rivets and some adhesive are going to work out just fine i think.
thanks for all the quick and useful responses! this is a great forum.