For quality sound and running components, don't even think about using the power from a head unit. It just won't give you the quality sound. 50 watts is about the minimum I would go with, as I would suggest around 75 watts/channel. Sounddomain has an excellent deal on a Phoenix Gold Tantrum 250.2 that puts out 60 watts/channel. They have refurbished ones for $139.00 plus shipping. The PG Tantrum is an excellent amp as I am running the 300.2 in my Mustang right now.

 

iv heard good about phoenix gold...

how about these 2 amps...

PG Tantrum 300.2 (75x2) = ebay $200
PG Tantrum 500.2 (125x2) = ebay $240

MTX Thunderform 2-10"s = ebay $250

MB Quart 216 6.5" Component = ebay $160

total = $850

 

Excellent choice on the amps and good prices to. What are you going to use for a headunit? I would suggest replacing the factory one as you will get much better sound and you won't have to convert the speaker level outputs to low level outputs to hook up your amps. Most of the better decks have a subwoofer level control that allows you to increase or decrease the output of bass from the headunit. Nice feature if you listen to a variety of types of music that have different bass output.

I'm not a big fan of the MTX subs, but for the price they would probably be pretty decent. The Thunderform box is a nice looking set up, but my choice would be to find one made out of MDF as it should give you better sound. That way you can also choose the subs of your liking and have the box built to the speakers spec. It can make a big difference. MB Quart components can also be a little on the bright side, as I suggest you give them a good listen to compared to others before making your choice. Speakers are probably the most critical component that you can put in a system and your ears should be the judge with what you go with. As with any speaker, some will like them and some will hate them. Do a lot of auditioning.