They need to change up the PSU. I would consider a 1TB SSD and maybe the 980 or Titan GPU.
I don't know anything about computers, but I've really been wanting to buy a PC to play games that we can't play on Xbox. I'm looking to get a PC that can handle practically any game and mods. $2,000 dollars is my budget, but, if it's possible to get lower than that, that's great. I just need a website, with a suggested build, and I need the providers of the PC to be able to assemble it, and send it to an address, not a pick-up location. As I said before, I don't know anything about computers. Not even what desktop software I should use, so any suggestions and help would be greatly appreciated. Thanks.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic