Missing a center cap for my Advanti's... anyone know where I could pick one up?
 

I have some 17x7 advanti race revolution wheels that have 1 center hub missing. (got them off some one in this forum actually, forget his nick at the moment)
Turns out, they are pretty rare rims, at least so far. I can't find squat on the net about them now, I remember when I picked them up a year ago I only found 1 or 2 sites that actually sold them.
Anyway, a center cap came off, and I can't find a replacement, tried 4 rim places in town (Houston), and Discount tire, no luck. Anyone know of a rim store that would carry such an elusive center cap? Or even 4 center caps that would fit the wheels, I'd be willing to replace them all, looks really tacky w/o a centercap.