its the 2000, not the 2000x, I am not sure it it makes a difference on the efficiency.the 2000x pulls about 300 amps of current.....i like the SS 8's
I found 1 company that makes a 200 amp alt for this car, I will pick one up once I have the cash but it is not going to be for a while. I will be running 2 12" w6v2's untill I get the sub stage I want so this amp will not be running full tilt for now. I will be running the big 3 and 3 yellow tops which should keep my voltage pretty stable while running the amp at half or less then half of its full output.my friend had a us 2000 along with a pair of us 600's in his blazer and was having voltage issues. He had 3 2150's and a dual alt set up in it to back it up also.