Do more research before saying they are crap. They use all the same parts sized as Garrett's and they are interchangeable they are not knock offs.The company has been around since 1966 it comes with a full year warranty and if it does go after that it's just 300 bucks and your old core. They are a ISO 9001-2000 certified company which is very hard to come by. There is a difference between cheap and affordable.
all the info can be found here about that
http://en.wikipedia.org/wiki/ISO_9000
here is the company site
http://www.masterpowerusa.com/
here is a video of the facilities
http://www.youtube.com/watch?v=JfIISzQJGT0
I went with a .96 exhaust and a .70 side compressor i can get my fist in the inlet housing lol. Were going to advance the timing on the low end to get it to spool sooner. I'm running a full tomei top end so revving to 9k is not a problem so i have a very usable power band even with it coming in at 5k. I ordered mine from a master powers dealer being when i looked them up people were selling knock-offs on ebay which tarnished there names. A lot of domestic guys are running these and seeing great results so are a lot of supra guys.
edit: garrett use to sub out work to master powers years ago