I was asking at the dealership and they were saying that the RTS rims by Enkei will fit:

http://www.enkei.com/truck%20specs/RTS.html

Does anyone know anything about Enkei rims? He said they are on for $150 CDN...

Interesting find...they make one with the correct specs, and it looks like the holes for the studs are recessed, implying it might have that "built-in spacer" that the stock wheel has. No way to know until you try it, though! But it does look promising.

they look to nice to offroad with...but give them a try.