Any SCS F5 hub (center cap) options?

I know the SCS F5 wheels are made with no hub (center cap) options available, but curious is anyone has modified (or made) something to fit?
(These would be the wheels of my choice, if I could use center caps).



I'd like to see something like the spun alum TRD's in there..

 

When I looked into getting those wheels, I had plans to get 2 of the domed dust caps for the front hub and tack-weld them to my rear drums. That way the back would look just like the front, which doesn't look too bad with the little domed cap. But...I ended up getting different wheels.

 

Thanks MKW. Yes, feasible, but a little bit of a pain...

 

Hell, anything worth doing is a little bit of a pain.