Nope! I am not aware of a Stillen CAI, but the Stillen POP charger (cone filter) you are referring to does not require any modifications to the engine bay or battery size as you stated. You remove the stock air box and replace it with the Stillen POP. Leave everyting else alone. Simple installation.91maxima said:I don't know much but I am pretty sure the stillen CAI is just a cone intake and all you have to do is get a smaller battery so it'll fit in place of your air filter. I am not sure but I swear I read that some where .