Do I need to plumb the breather hoses to the flame arestor or can I just put a breather on the valve cover and have a clean look. Do you need the vaccum of the carb to pull the breather fumes into the carb ?
Sounds like a simple question....just do not want any excessive pressure in the crank case.

Sheikman

Just the breathers should work fine. If you don't have baffles in the valve covers, they may drip a little oil though.