Now this is making a lot of sense to me now haha. My fronts are the 22.5 wheels as they do have tubeless tires. I believe I found a vin decoder for these trucks and I was able to determine that the truck is in fact a 4400.

So now I understand that the 22.5 wheel, 6 and 10 lug, all were single piece tubeless, great!

Now, were the six lug 22.5s and option for the 1.5 ton or for strictly put on the heavier trucks. Another way to ask I suppose is did the heavier trucks, 6400, etc come with 22.5 single piece wheels? If so, I am on the search.

Thank you Mike B and EdPruss. I have really been searching for this information!
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