Holley Carburetor

Hello everyone. I'm rebuilding a 750cfm electric choke 80508-2 holley carb and am looking for the metering block on the primary side of the carb. The metering block has the numbers 10569 stamped on top. Does anyone have a holley parts carb with that metering block or the metering block by itself for sale? I'll buy the entire carb or just the block. Thanks guys!

Edit: I could also use the baseplate which is stamped 12r-4770b.