Turbo Replacement?

Hi, I have a 1.9 TD AAZ with a T2 turbo on it. I cannot find anything related to the T2, and it is beginning to seep a little oil. The engine is new, but I reused my old turbo and injection pump from the engine that I replaced. I think that soon it may need a turbo replacement and I was wondering about it and what would be a good replacement. I am no genius mechanic or anything, so a simple swap would be best. What will bolt up? My setup uses a siingle port actuator for the waste gate and I see a lot of turbo sets with a dual ports. Can i use just one port on a dual port actuator?

Thanks!

Well, in my signature is the TDI search engine, well here it is again search it there, I just got a bunch of results in the future, you can find it in TDI 101 I recommend bookmarking it
https://cse.google.com/cse?q=+&cx=018097697432185261444:_idbzjdyxdm

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You have an IDI engine rather than a TDI engine, so you'll probably get more responses to your question over at www.vwdiesel.net, which is many of the folks still running IDI engines hang out these days.