See if they send you the hub-centric (stock style) parts or lug-centric. I've been thinking of getting a set of rims/tires for desert use and a hub-centric set that I like is hard to find.
Andy, the wheels ended up fitting perfect. 87.1mm hub bore, and our trucks apparently are...87mm. I got 14mm x 2" splined lugs with the wheels because standard lugs would not fit..even with a thin walled socket.