Holley primary metering block not aviable - replacement part?

PM 65 said:

Thanks for taking your time and searching for me in the Net! I have checked summit and jegs completely down for the block. For 4776-x is no primary available. I`m pretty sure that a block exists which will be physically the same as the block which i`m searching for. But to know which one it is… that’s another thing.
Slowly i`m tending to get an aftermarket product and good.

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