I was wondering would I need a amp for the six speakers in the box if I kept the stock headunit or an aftermarket. I would also wondering would it sound better? I know that I need a amp for the sub. I am also debating on which enclosure to get. I like audioformz sub box and I also like the encloser that fits under the front seat. What are some of your opinions on either one of them. I was also thinking about getting the kit that alouds you to keep the stock unit and add a amp and a sub, does anybody has experience with that. Thanks Derrick