I let my 4 yr old son "help" me work on my car. It is a 58 fairlane with a 292. In the process he got into my nuts container and i am missing one of the pal nuts that go on the connecting rods. Does anyone have suggestions on replacements for the pal nuts? I called Mummerts and he didnt have any

any suggestions you all have tried or did would be awsome. In talking to a local mechanic he said these used to be used alot on tractors and most of them just got pitched is this a posibility?
restoring after 50 years