I bet you could pull a 5ver with the 4" kit. I know a bunch of guys that pull them with the Cognito 4-6 AND the Cognito 7-9.
You will love the Cognito Leveling kit. Later on down the road if you get a lift kit, you can still use the a-arms and braces but would have to buy shocks again. The new...
Try routing the antenna up through the front pilliar, then along the headliner to the 3rd brake light. Take off 3rd brake light from the outside. The antenna might be able to sit inside the 3rd brake light cover.
Kennedy complete dual system (the one without the filter). I just installed one and it is super nice. The wiring harness and everything is awesome! For the extra filter we installed a nicktane setup at the same time!