1965 273 2 bbl engine.

generaly on chrysler V8 engines. the 2 barrel parts from the back edge of the engine to the cab are a different length and the brackets are different. ie with a 4 barrel carb you need 4 barrel parts. else it can lock open. this is for the engines that came with 2 barrel or 4 barrel carb. so the 440 doesnt have that trouble, ie they only came with 4 barrel.