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question...?? The "top" of that carb pictured has tubes pressed in back side of air horn
1970 carburetor has "HOLE" with remove able TEE
Correct. A 1970 carb will have the tee fitting at the back of the air horn. The twin tubes were 1971-up. Note also that the boss on the 1970 air horn is narrower than on the later carb air horns.