These are original 1950-62 Chevy 6 cyl Intake / Exhaust Manifolds.  Good looking condition, didn't find any cracks, some lite pitting in areas, exhaust dump threads look useable-see photos.  Heat flapper is not stuck, but has some minor wear-see photos.  Intake manifold has a broken bolt for the carburetor-see photos.  GM Book shows the exhaust fits all '50-62 Chevy passenger cars, pickups and trucks w/ 235 or 261 -6 cylinder engine (Except double-duty and coe).  Intake manifold fits 235 and 261 engines but may have some minor differences throughout those years ('50-62).  Please check my other auctions.