What year Wheels will fit a 2004 GMC 2500HD 4x4, 8 lug?

[Grubbworm]

What year Wheels will fit a 2004 GMC 2500HD 4x4, 8 lug? I have an opportunity to buy a set of 16" wheels off of a  2009 GMC Sierra 2500HD SLT 4wd. The price is really good and I like the looks, as well as the fact that they are original equipment GMC. I need to know if these will fit or not. Everything that I can find the internet says that the bolt pattern on both are 8x6.5" or 8x165.1mm, but I am still not sure if they will fit. I thought that I read/heard that they changed the bolt pattern some time between 2004 and 2009. Can anyone tell me if these will fit? Or even where I can find reliable information on this.

[Grubbworm]

Well, I got him to send me a few more pictures. On a couple of them he used a tape measure. As it turns out they are 17"x8". Awesome price $100.00 for all four of them.. Too bad that my 16" tires are still in new condition. Maybe if they were ready to be changed. Oh well, better luck next time.