I have a set of Exel H50's in silver (not chrome) that are obviously a few years old. The plastic center caps have started to become discolored from the sun and such so i want to replace the caps. They wheels originally came from wheelmax.com and I've tried contacting them but th h50's have been discontinued.

I tried searching on ebay but with no luck. I know the Exel's are replica's/knock offs so are there any other makes who's center cap would fit?