Bolts, bolts, bolts... The AN6 bolts are almost $3 each. I had all the bolts from the teardown zinc plated, including just the right size for the front shocks. Of course I'm concerned about strength of 40+ year bolts. But these bolts are threaded into mild steel tapped plates, most certainly not as strong as purpose made modern nuts. Also, the bolts are holding down rather soft aluminum. Since the force on the bolts is in tension, not shear, I'll bet that the last thing to give in that situation is the bolt, even a 40 year bolt. A grade 8 or AN bolt is probably overkill, and, in the case of the AN bolts, a waste of money. The two advantages of the old bolts are the correct head markings and the correct amount of grip length. Am I just deceiving myself?