the question is, why?
Either you have a 6 pack, or you don't. If you are thinking about getting one, chances are, you won't, as the simplicity of a good 4 barrel and the easier to find, and less expensive, air filter housings for 4 barrels...
And if you were determined to get 3 carbs, would you go for the new set of 3 Demon carbs? or throttle body fuel injectors, etc etc?
So, having settled the carb issue, if you have, or buy, the classic set... are you going for the original look for authenticity, or the original fuel lines because they are already on it, work, and don't need replacing?
Just asking, after all, those small vacuum tubes aren't going to get replaced by Earl's, just the fuels lines, and you will need a AN to fuel line adapter to connect to the fuel line coming off the fuel pump