Original 1968 Factory 340 Equipped With Hot Air Stove?

69_340_GTS said

All that P2946105 does is keep the plug wires from burning up. I can't recall any 340s before '70-'71 having the hot air system that the OP mentions

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everyone i ever had was this style, no heat riser because no place for the heat to go. all had the factory "unsilenced" air cleaner