Just one I thought I could trust. they're advertised price is bogus, can get a set (2) for $350 delivered. Why what other brands did you have in mine?
also, this is the setup im going to do
Fair enough. Where have you got that price for the type-r subs from?
As for alternatives, it all depends on your budget, so what is your budget?
For the amp, Option Audio is highly regarded around here as great value gear.
Their OAK1200 runs 1200W RMS into 1 ohm, for $339 from WOW.
To suit that amp you will need to purchase two dual voice coil 4 ohm woofers, aka D4, and wire them like so:
Once you give a budget for the set-up, we can offer alternatives. Don't forget you will need to include the price of wiring and installation accessories.
What you need:
Headunit (unless you have one?)
Front speakers (preferably splits/components)
Amplifier for front speakers (unless you want to run them off of the headunit)
Amplifier for subwoofer
Installation accessories (headunit surround, antenna adaptor, electrical tape, soldering iron, harness etc.)
Wiring kit (power wires for amps, fuse holder + fuse, RCAs for headunit to amp, remote wire for amplifier turn on, speaker wire etc.)
Sound deadener (sound deadener and proper installation improve the sound quality extensively) **Not needed, but highly recommended**
Rear speakers are unnecessary as they ruin your sound stage (if you're at a concert, you expect the sound to come from the stage infront of you, not from behind you.) and you don't need them unless you care about your rear passengers that much. You can use the stock speakers for the rears, and can upgrade them at a later stage.
Also, that diagram you posted is exactly the same as StoneX's.
Let us know your budget, so we can help you further.