I need a set of component speakers, I want to replace my stock ones, I have 2 12'' cerwin vega V-MAX's in the trunk, 6 ft cubic box tuned to 35 Hz. I need the 6x9's and the 4'' or tweeters for under 100$And does anyone know how to keep the air preasure from the trunk to stop pushing on the 6x9's? Thankx