This is a date matched pair of Big Block exhaust manifolds 3916178 and 3909879 dates B 8 8 and B 21 8.They have been jet hot coated in ceramic so they will not burn this silver color off.I was going to use them on a project but never did-they were bolted on but the enine was never ran.Stainless steel studs so they won't rust on either. $250 plus shipping
Hillar had put one of those drivers side manifolds on the 454 Laurentian, there was clearance as it was a manual steering car and there was no interference with the steering box. When I sold the car, the fellow I sold it to indicated he wanted to upgrade to power steering, so I provided him a proper B body drivers side manifold. I don't know how, but he was able to use the non-Impala manifold with his power steering box upgrade.