Here's where I bought the adapters,
http://adaptitusa.com/4-lugto4-lugadapters.aspxI have a friend who has a lathe and I turned them down. These were thicker on the back side mounting holes than another pair I had used for more than 100K miles on my S10 without a problem so I took a little off the back and off the front.
I had found others that were only 5/8 inch thick that used a special shallow pin drive nut to mount them to the axle but the nuts only came in metric sizes and the company didn't make the 4X4 pattern.
If you wanted to go to the trouble of pulling your axles they could easily be re-drilled like I did to the rotors but to use these wheels they would still require a spacer to get enough clearance on the backside.
Dick