Thank you Shellology, this is also what I've been looking for - rims with clearance for the 3600!
tk261 in Denver - save on shipping, there's a Redneck Trailer Supply in Frederick, off highway 52 and I-25, see their catalog, they have the same rims Shellology describes, the 17-153's. They have branches all over the country:
http://www.redneck-trailer.com/locations.htm
