Audio System from scratch.. Bye bye Bose..

pty370z

So, I have a Touring 370Z and I'm considering removing all my Bose system so I can install a new headunit, some nice 4-way 6.5" speakers in the doors, remove the rear speakers or just leave them there but unplugged and changing the subwoofer...

I would love to spend the least amount of cash possible on this... Has anyone considered using any of these two alternatives for a subwoofer replacement..?? Both of these options are a built-in amp/woofer setup.. They look like good alternatives and occupy very little space...

I would appreciate your thoughts...

Kenwood KSC-SW10 OR JVC CS-DA1

And one question in the process.. What would I do with the front tweeters (the ones in the dash by the windshield)..?? can I forget about those..?? Thanks..!

__________________
2010 Solid Red 370Z * Touring-Sport-6MT * Black Interior
Performance: STILLEN * BERK * UR * MISHIMOTO * K&N * Z1 * ZSPEED * UPREV * DBA
Interior: GT-R Red Start/Stop Button * MSA Floor Mats * PW:JDM
Exterior: INGS+1 * SEIBON * FUJIMURA * PW:JDM * UAM * KICS * VOLK