I have a 68 a Charger with a 440, factory hood, Mopar performance aluminum dual plane intake with a Edelbrock 800 AVS carb with electric choke and standard dimension coil. I'm wanting to get a K&N X Streme air filter assembly but I do not know if I need a raised or drop base or what height will fit under the hood. I am looking at a 14 inch diameter element. Any help would be appreciated.