...So heres my real question, i recently have found a guy who has a complete set from a 46 1.5 ton that hes willing to sell to me cheap.. can someone tell me what size they are? would they be wider that the 20x6's that should have been on my truck?
Only the seller can definitively answer that question, ask him.
I'm surprised your wheels are 6" wide? Do you really mean that the stock tire size is 6.00x20? If so then the rim width between bead seats will be something noticeably less than 6".
Grigg