Just don't get the reverse rear wheels thing. Friggin stupid. Why not just get one big fat single if thats the look you're after. That's what it ends up looking like anyway.
At first I thought it was a clever way to get people to buy more nut and hub covers...but you'd have to anyway, even if the tire wasn't reversed.
I'm with lilj on this one...that's the best part of having a dually, the deep dish out back.