Tweeters in the Dash???

[Striker169]

So driving home tonight I was thinking about speakers for the truck and I had seem the new Audi's pop up tweeters and that got me thinking... what about cutting a pice of pipe at an angle and cutting a hole in the top of the dash and welding the pice in there to where it was like an angled tunnel that was big enough to mount a tweeter?

Anyways where has everyone mounted some tweeters on their trucks? I will try to mock up what I am talking about tomorrow and post some pictures.