ROCKETHEAD Dec 26, 2014 Bill These are meant for deuce or double deuce car carbs, I changed the filters to K&N 4inch wide by 3.5inch tall. They work great, similar flow #'s as the 3 K&N's others have done, I like the chrome caps personally. Dave
Bill These are meant for deuce or double deuce car carbs, I changed the filters to K&N 4inch wide by 3.5inch tall. They work great, similar flow #'s as the 3 K&N's others have done, I like the chrome caps personally. Dave
