Rear Speakers... Which ones to buy/where to buy????

[Supra2NR]

I used 4 5.1/2 3 way speakers
All 200w ,
Type S speakers from pioneer,for the interior
And 3000w 8 channel amp from eclipse to support the 5.1/2s

And 2 12" sub with the metal casing from mtx(don't know the specific name)
A 2000w 2 channel watt from mtx,for the sub

This all worked for me when I was into sounds, and I used this setup on my old car
But the 4 pioneer speakers made it into the supra, and I only use a single 12" xplod sub
And a 1000w xplod amp
They don't pound like mtx,
But I'm on a faster car now