Rebuild my Turbo or get New Turbo?

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I have a stock Garrett t28 that came with my s14 S220DET.

I searched online for some rebuild kits and I came across this website which gave me a little bit of useful information:

http://www.gpopshop.com/garrettt2kits.html

My turbo is currently spitting oil out like a mofo. I want you guys to know I am on a strict budget as well. My goal for my car is to spool up quick and have a HP goal of around 300-350 rwhp.

I am not sure if I should dish out the cash for a new turbo or to rebuild the T28 that I have. If I get a new turbo, I was considering the Garrett GT28RS Disco Potato. I know a lot of you guys will say to get the next step up which is the GT2871R. Like I said before, I want it to spool as fast as I can and have a max hp of about 350ish and thats why I am thinking of the Disco Potato.

That website I listed above says that there 2 different kinds of seals. Because my turbo was on a s14 engine, I am assuming that I am to go with the dynamic seal. Correct me if I am wrong at anytime.

For those of you who have rebuilt your turbos if you could answer some questions of mine:

1. If I was to rebuild my T28, would it be like new again? EDIT: The kit I am looking at is a genuine Garrett rebuild kit.

2. Would I be a fool to think I could rebuild it myself?

3. After all is said and done, how much did it cost you to rebuild the turbo even if you had to send it to a shop to get it done + the price of the rebuild kit + taxes.

Thanks