Just found that Ford Econoline 16" rims fit our 3600 trucks and the stock 3/4 ton hub caps fit the center. Many 8 lug wheels have to small an opening if you want to attach the stock cap.
I'll attempt to link to my webshots. photos. I found that these wheels are very inexpensive, but not all that easy to identify. I've seen some on ebay. Also they have a small Ford oval logo stamped in the center between the lug holes.

Also I talked to Wheel Vintiques and had them measure the center and stock Chev cap wont' fit.

http://community.webshots.com/album/577391609MmVRIU

Last edited by JiMerit Boltr#43; 04/19/2010 9:49 PM.
It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed