Has anyone used standard grade 8 bolts to replace these? I can only find Chevs of the forties that carries these, but it's $15+ just for shipping 1-2 bolts

McMaster or Fastenal has these but, they do not have stepped shoulder like the OEM's

Bolt


1949 Chevrolet 3100 Suburban Carryall
"Bad Guy"
In the Stovebolt Gallery
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1950 Chevrolet 3100 3-Window
In the Stovebolt Gallery
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1966 GMC Suburban Carryall Custom
"Big Guy"
In the Stovebolt Gallery
More pix on Photobucket