depending on how your truck sounds [how well insulated from engine and road noise], it can work best to have a speaker between the visors as original, maybe w/ other better quality ones where ever, but when you're on the road, sound from the ones behind or under the seat or in the doors or kicks don't get to your ears well in my experience, [unless maybe behind the seat,close to the top pointing up] - noisey ol original trucks for me, speaker where GM put it
Bill
