ok i currently have two 18" Q's w/ (
cooling package) at the moment and cresendo bc3500 ran in series/parallel to 1 ohm. i got a buddy willing to buy them, and i was thinking about upgrading to the BL fully loaded or BTL's, with maybe just the cooling... is it worth it? pros and cons for options?? (btw, i have two yellow top bats, one h.o. alt, big 3, and 0 gauge across the whole system, 15 cuft box, ported at 30 hertz, and its in a ext cab truck sub forward)