Need help on what wheels and where

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I need some advice guys, I'm finally getting some free time/money and I want to start working on my 68 GMC again. First up I need some new wheels, this truck is going to have a traditional hot rod look (ratter) so the wheels have to be stock or something not shiny or flashy. I want to run the original 6 lug bolt pattern so that makes things a little tougher.

I would just assume run the original wheels but I did a disc brake switch up front and now my old wheels will not clear the calipers. So my question, where can I buy some stock/repop wheels that will fit my 6 lugs and clear my disc calipers.

Thanks so much guys.