Originally Posted by Chuck33079

OK, so maybe I'm picturing what you want wrong since the area behind the glass on a Z opens into the cargo area. Are you thinking you'll put a vent there and then run some kind of duct through the cargo area to the undercarriage in some kind of attempt to gain rear downforce? Did I follow that right? Please tell me I'm not reading you right because it almost seems like you've never opened the hatch and looked around, or looked under the car at all the mechanical bits to see why this would not work.