I am going to be locating our speakers to the same location. the guy that had the truck before was a rat rodder so used street signs to make panels for the left and right wall in front of the door (not sure what that spot is called) and has the speakers there. I am going to relocate the deck to the glove box and the speakers behind the seat. My question is this, if I added speakers, for high and mid for instance, could they all go back there or would it effect the sound? should I hide them in the dash or being behind the metal would be just as bad?

Red