DD audio ( the kevlar 3 componet set), with a 04 model premier 940 head unit, dd 6.5/4inch/silk dome tweeter. Run your rear speakers off of the head unit and get a really tight woofer i.e. 12 w6/w7 in a sealed box. Run a JL 5-channel, If you can find an Esoteric sudio amp for mids and Highs and run a JL 500/1. That same setup won hands down @the 04' isaca sq comp. The competition had over 15k just in product. Run JL TR series two ways in the rear.