I couldn't find that one but, here are two other approaches. One is a special collar tacked onto the hubcap and the other is a modification to the hubcap. Each approach is for a different type of rim.

http://www.stovebolt.com/bboard/cgi-bin//ultimatebb.cgi?ubb=get_topic;f=2;t=004804#000009

1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed

My Chevy Master 4 Door is on the Road!