If you're in Chicago, you might drop a line to Mike or Chris at Exile Racing Technologies up there. They have a website you can score in Google. It's a mainly 3G/Avenger vendor, but they have a couple of the best 2GNT guys in the area working for them and they might be able to point you in the right direction a bit better than randoms on a national forum here.
I will go so far as to personally vouch for them. They will shoot you straight.
And what's up with the 420a? Selling the 4g63 and buying a non turbo? Way to go man.