Need a good Amp

I just got a Audiobahn 10" 1800-Watt Subwoofer and I need a amp for it.  It has 900w RMS, dual 4 ohm connectors and a 1cf sealed box. Its going in a 76' Trans Am. Also would it be better to run two wirers from one channel or two, I'm not sure if you change the ohms will help or not.

Is Profile clarus series, CL1200 a good amp? Also I would like to keep the cost under $450, but I dont think it will happen. I could use any help.

One last question, how do I wire it up so I can change the ohms?

I'm not worried about blowing the sub, I got the warrent from Curcuit City, so I just got to show the reciet and I'll get another one : )  I have to use a 4 guage, cuz I'm going to use my old amp to push my 6.9's but it work to get the connector (it goes from one 4 and connects to 8 guage wires) but use a 4 wire instind of an 8?

thanks for the help, hopefully Mon or Tues I'll get an amp and have it all hooked up.

4 guage is the way to go.. I used  a twisted pair of 4Guage when i relocated my battery to my trunk and i have seen such a great difference. Now i just have to get a better battery and alt. But i would go with 4guage.. you can get a kit for $20 on ebay.  You only have one sub right.. So i would think this might work for you. I got that diagram from my post thanks to DYohm.. Use that but wired only for one sub instead of 2.

Really that sub dosn't need 1200 watts to sound its best. Its power rating is over rated. You will only need something like the MTX amp I listed above. If you bought the JBL amp you could only wire your sub either for 2 ohms or 8 ohms and 2 ohms is going to give you 1200 watts you don't need. You need to wire your sub like this: