i'm not really worried about resale, i'd leave the subs in and call it an upgrade, or else be a cock ass and hide it. However i'd consider a blow through as a last resort i don't want it to be a ghetto install, ghetto bed, or leak. I had the 40 section of the 60/40 folded down and had a ported 12w7. it was OK, but i'm not a huge fan of JL, got the speaker for $200 though. Anyways that wasn't loud enough, and i'm upgrading. might just do the one 15" BL dual 2ohm, ported, 1600W RMS x1 class A/B power. also running: kenwood dnx-8120 -ipod/backup camera/pac swix/ the works knu konceptz kolossus flex 1/0 power/ground big3 knu konceptz fuse blocks knu konceptz twisted rca's ppi pcx4125 ppi pcx2400 rainbow profi vanadium kick components not sure on rear fill yet 2 Kinetic HC1800 lots and lots of Raamat, black foam stuff, sealed doors, (not in yet) still curious if it'll make a 3/4ton diesel quite inside subs i'm leaning the 15bl ported but not 100%. what would be louder and fit in the same space with the same power(1600rms)