Eric D Sirkia

Hey guys! New here to CAF, hope I'm posting in the right spot? If not bear with me, and gently remind me where I should post in future. I'm in the midst of planning out a tweeter/mid install in 2012 Ford Focus SE . I have a set of Focal IS165 looking to mount in the front. I'm concerned because I have no passive or active crossover, other than built in settings if a Kenwood 5ch, and the KFC ddin head unit. Should I run a separate passive/electronic crossover or is it not needed. Thanks in advance for all efforts .