8 1/4 or 7 1/4 BBP rear end

A long shot I know, but you never know. I'm in southern ID and am willing to drive up to 5 or 6 hrs. I have a 74 duster slant 6. I will be putting disks on the front, so would like to go BBP all the way around. I will be keeping the slant so a 7 1/4 will work. I would rather not drill or use adapters. I would be interested in 7 1/4 BBP axels from any were they can be shipped.
Thanks