[ixnay]

When I bought this rig with a bed full of parts, these three sheet metal pieces were included. PO was working on rebuilding the heater box, so I surmised these had to do with vents/heat & ducting.

Red oxide sheet metal: I have no idea. Square edges aren't too common in my experience

Silver sheet metal: screens for floor vents? Placed in between the firewall and fenders/side panels?

Thanks,

MJH