I just had Jorgen rebuild my rack, but it was more expensive than what other people are quoting here. Jorgen is in Ann Arbor, MI and there phone number is 800.333.0600
On a side note, I tried to rebuild it myself (Rock Auto kit as I was told there are no more in the USA from Mitsubishi), it was pissing fluid out the driver's side inner tie rod, and once rebuilt by me, it still did it. They fixed it and it has been leak free for the last couple months.
I ended up buying a spare rack while they were rebuilding mine. Apparently I like having spare parts for my car.