Alright here is the lowdown. I have a friend with 4 MTX 4000's in a ext cab s-10 80's model. I am not sure what amp he is running and he claims he has 1300$ in the system and I believe it seeing he got it from circuit city. But the deal is it doesnt hit not even with the windows down even if I sit inside it *****. I was wondering what you guys think it might be maybe bad install lack of amp or even not enough airspace!? Give me your comments on if you think it should hit or not becaused I am stumped I looked it over and it seems like circuit city screwed him on the install. I am so stumped I didnt mention it sounding like **** to him because he thinks it is the ****. He just got it and told me to look out for cops while he turned it up and I was standing 3 feet away and could barely feel it. It was hard not to laugh!