I have a 2001 mustang with the mach 460 system. I know that it runs on 8- ohms and needs to be rewired with new amps to get after market speakers to work. I'm looking at purchasing a Kenwood kac-8406 4 channel amp that puts out 900 wats max. I want to hook up my two pairs of 6x8 kicker 41DSC684 d-series 400 watt 2 way 4 ohm subs with tweeters. I would like to hook up my two kicker 41cst204 3/4" cs series tweeters to my Sony head unit which puts out around 175 watts. Is this a decent setup. Will the 6x8 kickers subs with tweeter work well with that amp? I am extremely new to car audio but I love high quality sound (very into it in the mobile phone world. Know my way around an equalizer decently). My car right now is super bassy because there are four subs stock from Ford and only two tweeters. Any help? Sorry if this is a basic question i m just really confused and people started mentioning rms and I'm lost lol. Thanks for any help.