One complete 4412 Holley carb and three parts carbs. Intended as a parts source for making a Tripower setup for Ford big block 390 428 FE engines. The complete carb has been lightly sanded in the venturi. The parts carbs consist of main bodies, metering blocks, and baseplates. One baseplate is bare. Another is missing the throttle arm. The missing parts are available at Allstate carb parts. You will need to find regular side hung front float bowls. The metering blocks included are all 4412 blocks, you may have to use different blocks or re-calibrate these blocks for the outer two secondary carbs.