I've got my grandfather's old car, a beauty from 100 feet away....but it's been driven every year. Went from him to my dad to me. It has a straight 6 with duel carbs. There's a short section of fuel line between the two. It's dripping and needs to get replaced. Anyone know offhand what diameter the fuel hose would be? I'd like to have new hose in hand when I go to work on it.