Well, if I can place my opinion, to get those L7s really pumpin, I think you should reconsider power wise. To go cheap and more, I'd say checkout the new Hifonics lineup of amps, my friend just installed the new 2000 watt amp they have and I think it does really well. If you got 2 of those, you'd be putting out a sureshot 3400-3600 watts for a 'tad more. That would really bang, especially if you got your new alt. I'd say try that or find a friend that works at circuit city. My friend gets 75% off kicker, 15" L7s are only 165.00 I think (2006 version) and the 12" are 135.00, the kx1250.1 is 375.00 and the kx2500.1 is 625.00 I think. I dunno, I'm just spitting out ideas.