20psi stock 5.9 carnage

After watching the video. That is the filthiest performance engine I have ever seen. Looks to have had no oil changes or been run on drain oil. And he just replaced the bearing. What did he expect the dirt to evade the new parts. The oil pan looks like it was just about rusted through before the holes were put in it from the rods. New bearings and the motor was that filthy?