2003 6 lug chevy truck rims on a 69

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Yes, the guy at the machine shop said he could reem the hole out, but as stated, you still need have the clearance issue.
I have a wheel here at the house that was given to me with a P265 tire on it I that was using to check clearances. The back was okay, but I would need to put it on again to see how much clearance was there. the front was definitely a no go, but the adapter would make it work.
As a matter of fact I saw this setup this afternoon on a 67-68. I was only able to ask him one question because we were at a light. I will look for the truck again tomorrow, it is on Ft Huachuca somewhere. He said he had used spacers.