A body BB manifolds on ebay
FYI... this is the ultra rare 440 A body manifold, just the driver side is unique very rare!! (Note upside down P# on drivers side) For a real resto on a M code car this is what you would need.
Still way over priced I agree. This is not just a B engine A body manifold. Regular A Body sets are in the $6-8 Hundred range these days now from what I have been seeing.