Part16john
are you looking for some close to original bolts for the head ?? same length, same head, etc ??
if my memory serves me the original are NOT grade 5 or 8, grading bolts came around in the late 60's
considering we only torque them down to Cylinder Head Bolt OLD: 55 to 65 ft-lb, Cylinder Head Bolt NEW: 65 to 75 ft-lb
Call Alma Bolt Company out in Michigan [https://www.almabolt.com/] they can make you the bolt you want or tell you what they have in stock that is really really close :) and pretty reasonable pricing. we use them for custom bolting, and i talked to them when i was doing my 1929 head, and they had great info and lead times.
original head bolt height was .386 they have a Gr9 that is .375, Gr8 .320
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