In my opinion a used motor is a core for a rebuild. I have one of my cars I purchased a car for $3500 for the motor and trans. The car is sitting in my garage with, I think, cam bearings out. Rebuild or replace. You can buy a crate engine cheaper than rebuilding an engine in most cases. The good side to a crate engine is you get a warranty. Know what a crate engine would cost so if you’re thinking about buying another engine it would be a lot less than a crate. I mentioned the FedEx freight for shipping but I do think buying an engine close to home is sound advice.