As of Sept 30th 2013 all AOL accounts have blocking to the forums has been lifted. If you have an AOL account, you should be able to register now.
Like Roadrage said, there are literally thousands of aftermarket wheels available. The wheels you posted look like reproductions of the factory original stamped steel wheels. That style came on pretty much every U.S. pickup truck manufacturer as the standard wheel for a long time (i.e., 1960's through 1990's). http://www.summitracing.com/parts/WVI-82-680804/?rtype=10If you are looking for wheels like the wheel vintique you posted, here are some of the trucks that had those type of wheels (not an all inclusive list):1969-1987 Chevrolet & GMC 3/4 ton pickup trucks: C20, C2500, K20, K2500, R20, R25001973-1987 Chevrolet & GMC 1 ton pickup trucks with Single Rear Wheel (i.e., not dually or dual rear wheels): C30, C3500, K30, K3500, R30, R35001980-1993 Chevrolet & GMC G series Van: G30, G35001967-1996 Ford F-250 and F-350 (Single Rear Wheel) pickup trucks1974-1995 Ford Econoline E-250 and E-350 Vans1972-1993 Dodge D250 and D350 (Single Rear Wheel) pickup trucks1971-1994 Dodge B-series Van: B350 Many versions of the 8-lug 6.5 inch diameter bolt pattern wheel could be had including: a 16 inch diameter wheel, a 16.5 inch diameter wheel, without split rims, with split rims, as well as several widths. Ford wheels would have a small (3/8 inch) Ford oval stamped into them and Dodge wheels had a small Chrysler Pentastar stamped into them. I'm sure there may be some exception, but they all should fit your C20 just fine. No differences in the 2 wheel drive and 4 wheel drive versions. Until recent years, most all the 8 lug trucks were lug nut centered wheels. If you're trying to find those wheels in Germany, you might keep a lookout for the U.S. Army Chevrolet or Dodge pickup trucks with 8 lug wheels. Otherwise, a good used set of 4 of that style wheels can usually be bought in the U.S. for under $200.