Okay, you don't have to touch the vents. I used to work for an electronics store and they sold a similar unit. You must have the screen in the dash but not the DVD. that you can put in the locking box/trunk/shelf, where ever you want to. Assuming that the two units are the same, the one i saw also had a CD/DVD changer, (Aiwa i think) which can substitute the other head unit. So again as long as you have the wires run to the location you want (for easy access i would suggest the shelf, but for aesthetic purposes i would recommend the locking box w/ a changer). Trevor Johnson 6974 and 4055 ________________________________________________________________ YOU'RE PAYING TOO MUCH FOR THE INTERNET! Juno now offers FREE Internet Access! Try it today - there's no risk! For your FREE software, visit: http://dl.www.juno.com/get/tagj.