I have Hummer H2 wheels on mine:
http://67-72chevytrucks.com/vboard/s....php3?t=162495
I bought the same centercaps as on the maroon truck pictued above and the special lugnuts needed to be able to mount them, but I decided not to use them. Both the hubcaps and the lug nuts are brand new. I'll take $50 shipped (via UPS ground in the lower 48). I paid about double that!
Hummer wheels are the cheapest available, and they are 17 X 8 1/2. They are on ebay for $300-350 shipped per set all day long! I only paid $150 for my perfect set!