Dual-quad intake with Carter carburetors. Was on a 1960 Buick 364 nailhead. I do not know what other engines that will fit on so please do your own research......Posted on Hot Rod Junkyards! $600
I've seen a 425 factory dual quad intake machined to fit the narrower 364. Might fit a 322 but won't look right om a 401/425.