2006 Suzuki Grand Vitara system?

I am currently working on a system for my 2006 Suzuki Grand Vitara. I am going with 3 W126DVC 12's and am wondering what amp around $300 would work for these. I've had plenty of systems before but am just learning how it actually all works and I believe I'd need a Mono amp. I was thinking about the Power Acoustik A1800DB, A2400DB, or A3000DB. Also, if anyone is willing to sell an amp that might fit what I'm looking for please let me know.

what kind of box you have in there?  What are the measurments?  Do you have the back seat installed?  Just curious I have a 94 Suzuki Sidekick and basically they are the same on the inside just upgraded you know what I mean?  Also how many amps are you gonna have and where are you going to put them?  I have 2, 1 under each front seat I found was best location.

I actually don't have the box built yet, but I am thinking of going sealed and I think they need around 1.25ft each. I want to run a big mono amp with a matching a/b class 4-ch for mids and highs. For my mids and highs I'm going to go with a set of Pioneer components TS-C720PRS or TS-C160R for the front and a set of 6.5" Pioneer TS-D601P speakers for the rear. I decided I am going to keep my stock HU but I would like one of those receivers that send a clean signal as if an after market HU were installed and have the inputs for amps. As you can see I'm going with a cheap set-up, but I believe it'll pound pretty good. I will be mounting the amps to the box or in front of the box on the floor if there's enough room.   

Sounds good.  I had 4 4" holes for speakers, actually cut the metal in the back to fit 6x9's haha.  My box is huge, its measurements are somewhere around 18x17x40, but the subs are angled so that is why measurments are as they are.  I swear was my first box I ever made a while back and didn't know much about calculating everything, and for first timer, DAMN DOES THAT THING POUND U!!!  I actually have no room for amps anywhere, unless mounted to the box, but under the seats saved me some wire for other installs so it worked out good.  Well let me know if you need some speakers, I can get them for you cheap cheap cheap lol.  model # let me kno if u do, you pay shipping, not looking for profit, just like to help people from getting ripped off from other places.

I am actually looking for these Pioneer components TS-C720PRS or TS-C160R and these Pioneer coaxials  TS-D601P . Let me know if you can get any of these, I'm also looking for an amp to power them and an amp that's 1 ohm stable and is atleast 1500 Watts.  Thanks

will do, will check it out for you tomorrow for sure.