Well just picked up a set 354 industrial hemi heads PN 1733463 today with the valve covers and exhaust manifolds. Are these worth trying to fix up or should I just use them for a conversation piece? They were sitting outside for X number of years and are pretty rusty. They were factory yellow?

bouy anchors???

Those are 57-58 354 Hemi industrial heads....if they are pitted badly not really worth much.

Post a couple pics of the set-up, Heads, covers, rockers and manifolds.

Depends if the engine had solid lifters with the humps on the covers for the adjusters they would be of greater value. Real bad pitting would devalue even those covers however. pics would help.