340 with metal in oil pan

It all needs to be taken down to it's smallest components and everything needs to be "Santa Claused", as in check everything twice. They put a piston in backwards, why would you think they may haven't messed anything else up in the bottom end? That's a new one on me, I suspect liquor (or worse) may have been involved... Wonder how many of the rod bearings are oiling the cam and how many are throwing oil to the outside of the block. Untelling what surprises await.