i have two alpine s type 10 inch subs. i got a 96 chevy camaro convertable. the trunk space is so little i used a 12" X 12" X 24" sealed box. but i don't like it so much and it rattles my trunk lid since it's hitting wide open. i want to buy the bandpass box? any suggestion. also, what is port tuning? what is tuning number for this subs?