Here's the deal. I had a 04 CVR in a box i made for my truck. It is a single cab truck and i i made it as big as possible. The volume is .84 ft^3. The kicker was distorted a little. it took a sheit so im in the market for a new driver. I like the alpine r series 12" cuz it only needs .7 ft^3 and thats about perfect. is there a driver i overlooked. also im going for more of spl than sq. Thank you, also the sub will be getting 370W rms from a power acoustik 1920 amp @ 4ohm.