Restoring a classic Chevy or GMC truck from '69 to '72? This TRQ set includes two brand-new exhaust manifolds, a direct replacement for the originals. They fit a bunch of models: C10, C20, C30 pickups, Suburbans, Blazers, Jimmys, and P-series vans with the 5.0L (305) or 5.7L (350) V8 engines. The part numbers match OEM references like Dorman 674-199/674-201. They're built to handle the heat and exhaust flow, sealing properly to the cylinder head. Installation is straightforward – they're pre-assembled and designed to bolt right up without modification. A must-have if your old manifolds are cracked or leaking. Always double-check your specific vehicle model and engine size before ordering.