Still hunting for an intake, but collecting parts in the meantime. Mic'd and inspected all the journals and got some main/rod/cam bearings ordered up and a full gasket set. Can't order pistons until I know exactly what's happening with the block, going to see if I can just hone the aluminum residue out of the bore first, but that's a long shot. Tore down the high-volume oil pump and sure enough it ingested some debris and is right fuckered, so I have to track one of those down with the right pickup orientation - apparently there's like 7 different 460 oil pump varieties, thankfully this was a Melling unit with a handy part number tag (M84BHV) I can cross-reference. I can just replace the guts if Melling makes a rebuild kit, but I can't seem to find a part number.