12v connecting rods and countries of origin
 

Hey guys. I've got a 91 d350. I had a problem a couple weeks ago where a connecting rod dropped a cap off. Correct me if I'm wrong but these engines aren't known to do this right? What cpuld have caused this asidr from the bolts being loose or failing? Also, I pulled the remaining 5 rods and pistons out to find some are Brazilian and some are Japanese. Is this a good indicator of someone slapping an engine together or is it normal to see different rods in one engine? Thanks everyone!