Boat Forum / Boats / May 2006

What application/year 454 would have came with oval port heads and the
mercruiser MPI fuel injections(the one with a two piece manifold)?
reason being, I have the lower base manifold that fits the oval ports
heads, but i need the matching upper plenum. The upper plenum from a
rectangular port engine would not fit. If anyone has that part number
that would help me greatly.