There appears to be a ECZ-9425-B manifold on ebay 1956 Ford Thunderbird 4 Barrel Intake Manifold He claims it's a 56 ECZ-9425-B? but not sure, selling for his Dad. $50 If someone on here wants a ECZ-9425-B you may be able to pick it up relatively cheap? No bid last I looked. I have no interest in this item, just passing it along.

"The Master Cylinder"

Enjoying life at the beach in SOCAL