Port-o-sonic or Holley Street Dominator?
Yeah, years ago when there weren't many choices. Was trying to get a lower profile manifold and keep everything under the hood; like the OP just mentioned. The stock kegger and the old Crosswind 2bbl. manifold would JUST clear the hood with a drop base air cleaner; since the factory throttle body is nowhere near as tall as a 4 bbl., but I wanted more room for a bit taller air cleaner. Ended up taking between 1/2-3/4" off the top of the Crosswind, there's plenty of meat up there. It was REALLY pricey to convert a manifold at the time (bung install, fuel rails, mounting lugs on the manifold for the fuel rails, then drilling the heads for the LA pattern... you get my drift. Plus the fact that I'm a cheap bastard!).