New in Box! Carburetor Adapter Kit
Includes: Adapter plate, 2 gaskets and mounting hardware.
Adapts Spreadbore Carburetor or Manifold to Squarebore Carburetor or Manifold
Can be used either way
Spreadbore Carburetors:
Rochester Quadrajet and Carter Thermoquad
Squarebore Carburetors:
Almost everything else 4 barrel
Holley, Edelbrock, Demon, Carter AFB + AVS, Demon, Etc...
To make it more confusing, Holley, Edelbrock and others make both kinds of bases for their intakes and carburetors so you can order what fits. Please check what you have first. This is a cheap and simple way to get a carb to fit on an intake and the other way around.