Hey. I would never buy anything from best buy. I would buy a phoenix gold amp on ebay-look for octane or xs series, and maybe two kicker comps. Eithor twelves or fifteens. They are really goo ddurable subs-pretty cheap to. Oh yeah. If you were to buy a rockford amp id save the money and just buy a lightning audio--made in same factory- but i wouldnt go that route. Also stryke AV's are good subs- but kinda pricy. I would do everything on ebay...except make your own box out of 3/4 inch mdf. glue it and screw it.