340 connecting rod oil squirters

SPUN bearing!
Son of a gun. I got the center link off and pulled the pan. The windage tray was okay. The oil pan had chunks and grit in a metallic paste. It feels like brake rotor shavings. I pulled #s 5 and 6 rod caps off. # 6 was heavily grooved and to copper. # 5 was spun. The ends were worn to a taper. I suspect the bearing halves were sliding in and out of each other since the rattle was not consistent. The pistons are new, they looked fine from what I could see. He is going to strip the accessories off and I'll help him pull and transport the engine.
Thanks for the help!