Mine are the chrome steel ones. No spacers or mods, except the lug nuts from the Dealer. They look like they have a bigger/wider "V" flange to mate to the larger hole that the 2nd generation rims have.

 

Chrome steel are 16 x 6.5; they will fit fine. Mine are the factory aluminum 16 x 8. In fact the 16 x 7 plain steel will fit too but they they get tucked under even further.
Kurt

 

Hey, that was me that taped your truck on the dyno in Colorado Springs. I hoped you wouldn't mind if I put it on YouTube! On your first dyno pass I was sitting and eating on the curb and got BLASTED by the smoke! Nice truck!!

I've got a couple other videos of yours if you want them

 

Didn't mind at all! I thought it cleared up a little better than that when wound up, but my nieghbor informed me "No, that's what it looks like".
I need a cam. Nitrous? Ported head? Lot's of ideas.
Kurt