<div class='quotetop'>QUOTE(SCIV &#064; Dec 19 2006, 07&#58;46 PM) [snapback]76779[/snapback]</div>
According to tirerack.com, the 07 is a 6 X 139mm. I think that is the same as &#39;99-&#39;06.

Double check me though.
[/b]
Yup... 6x139mm is same as 6x5.5". And yes, these will fit on the &#39;88 up 1/2T 6 lug 4x4&#39;s. I sold my &#39;05 GMC 17x7.5&#39;s to a friend with a &#39;97 GMC. Fit perfectly and look a lot better because his OEM alum 4x4 wheels were only 16x6.5