As Panic mentioned, the bowl and airhorn are zinc alloy, about 18 cents a pound around here. Check with your local recycling center.
The throttle bodies are cast iron. The single barrel throttle bodies can be placed in a power hacksaw to cut off the flange just below the throttle shaft. Then two of these can be welded together to make cross-adapters for various uses.
Give some serious thought before scrapping Rochester two-barrels or four-barrels, unless they are absolute junk.
Jon.
