You got me. Your pencil and mind are sharper than mine. Good analysis grasshopper. I would agree, however the magnitude of tensile loads is (go ahead, whip out your FEA iPad app and prove me wrong) probably insignificant compared to the shear loads.
Certainly the Ferry bolts would look high tech and aircrafty, but the hex with a good hardened washer would do the trick and look more original.
Remember though, any fool can over design something - it takes a good engineer to put it right on the edge of falling apart.
(and I did CMA with the phrase "MOST joints")
'69 1/2T stepside, Sea Foam Green, 250 L6 w/ 3 on the tree, not an option on it, in the family since new.
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