Thats quite a few miles. But if it runs good. Since he has had 5th gear replaced thats good. Check the motor mounts. If you hear clunking when you let off the gas that means it needs torque mounts, 25 bucks for inserts. Check the CV joints see if the boots are in good shape. Check for obvious overspray for accidents. Listen for loose change sound from passenger side, timing chain tensioner, or at worse new chain. And for some reason the list of things to check just left my mind, its a blank. Others may be able to fill in more