Bellhousing runout '65 273

The original 273 from my '65 Barracuda Formula S is now rebuilt and ready for pickup, but have run into an issue I need input on. This was an automatic that I have converted to a 4 speed using all factory parts including the proper bellhousing found at a swap meet. The machinist did the necessary work on the crank and installed the pilot bushing. I brought him the bellhousing and asked that he check it for runout. He did, and told me it is .017" out, and he feels its OK using it that way. I'm concerned and told him I would look into it further, and the factory manual says maximum runout is .008", so I think it should be corrected to alleviate potential problems later on. Am I correct in being concerned? Where can I find the offset bellhousing dowels to fix the problem?