I JUST DID MY 05 RUBICON. THE TWO ON THE SIDE OF THE CARB YOU HAVE GOT TO VENT. THERE IS A DRAIN ON THE BOTTOM OF THE CARB. IT HAS A ONE WAY VALVE BUT YOU CANT TRUST IT. THIS ONE YOU PLUG. ALSO VENT YOUR DIFFS, COOLING FAN AND REAR BRAKES. I THINK THATS ALL.