My First 318 Rebuild

Rods like that have collectively billions and billions of miles on them. I personally have never seen one fail.

The issue is the cost to rebuild them. For less money you can buy a better rod with cap screws and better metallurgy.

If you are set on using those rods, make sure the holes are the correct sizes and send it. They’ll be fine.
I'm not set on using these rods. Right now they're the most convenient, but like I said, I know nothing about them, I will measure them next week. So I'm still not clear on what causes rods to be copper coated, I poked around on the Internet yesterday and didn't find any satisfactory answers. If I understand why the rods are coated it'll make it easier to make a decision on what to do next.

I do have access to the motor that came out of the car, it's a short block that I was saving for later to clean and go through. But I have a set of 8 rods that I've run and know some of the history of.
I like the idea of keeping sets of rods together, and I'm in favor of using what I have right now, but am not stuck on that. I did but arp bolts to help the rods out a little bit