i found two oem carbs at the pomona swap meet, 1st one $25, 2nd one $40. both 4 barrels 1.12v. one rebuild kit from a catalog NPD i think. then i found a 4 barrel cast iron manifold at the long beach swap meet for $75. i was very impressed. it was fun to rebuild and a great performance upgrade. i like the carb so much im thinking about installing a few on my blazers.