ok, quick update. I fit the air cleaner on the carb last night after I set up the throttle linkages. The air cleaner that I have (14" drop base) clears the hood but will not work with a Holley 750 DP. The throttle arm on the carb hits the base of the air cleaner. I may try a 3/4 spacer and a 2" filter element. I will update when I figure it out.