yeah, they're out there and usually pretty reasonable. if someone were trying to keep it on that beer budget, 318 4bbl manifolds show up at the yard pretty regular too-- i have one of them door stops kicking around-- and with a coat of red to match the engine only a train spotter would notice it wasn't a commando piece.
smokin' deal! don't forget the little a-dapt-or plate to run a square bore carb. i mean, it'll run, you'll just be suckin' air like me after three flights of stairs.