<< Only amps can be stable to 1ohm, drivers create the impedance load depending on how they're wired, it's up to the amp to handle the load (and for the drivers to be able to handle the power the amp spits out) >>
thats basically what i meant: with the rf's 2 ohm and with and amp that is stable while wired that way one can get more power from their amp, it is much different if it is a 4 ohm, its impendace will not let it be power by an amp to that level, some amps can go to .5 of an ohm, but the other question was just a reply to the guy who was recomending the $1000 sub. iwas saying typically the mtx's cone works against it in high end usage.
for easy install of base with not much sacrafice of storage get a bazooka bass tube, they are very good for most audiophiles cause they are pretty cheap and with the self powered ones, you do not need an amp.
if you are just going to buy new speakers for your car, you should buy whatever you want,say those memphis', buy some bass blockers that clock frequencies below 75Hz. they are inline crossovers that block unwanted frequencies. i believe that is why you are getting such poor sound quality. especially if you are using your stock stereo. and if you go to get it done by a pro, make sure that they run a checklist of things that worked before and after the installation, if something was screwed, at their fault they will have to fix it. i rec. doing it yourself new speakers are really easy to install, but make sure you get the right size, there are different 6.5 inch sizes, check how it will hook up in your car and then cheack out the new speaker's atachment will it fit? right mounting depth. are tou sure that the front speakers are 6.5 cuase i looked you car up on the comp. and it says 5x7 in the front door. could be 6.5 tho. but check.