All the gear box vents ( 2 of them ) go to the fire wall , the rear end vent tube runs to the top of the frame and is capped with a one way flow valve . The gas vent is in the original location for now but I think I'm going to get a fuel cell and battery box and through it in the back . Theres no need to worry theres nothing on the blazer that can't be replaced , I know it sounds silly but thats what we do build it beat it rebuild it beat it again .