I would be wary of any NOS pushrods on ebarf considering it's a currently available part still from Mopar . A few years ago mopar had an issue with the pushrods and a rash of failures , no idea if the sysytem has been purged of these bad rods , I use original rods and never had a problem .

Troy one thing your friend needs to remember is that the metal is not just evaporating into thin air , tell him to check the inside of his oil pump to see where it's been going .