Ok, so I will be recommending the same old same old turbos I have in the past. I like MHI for its vast array of sizes and interchangeability. There are also tons of them available with low kms as many come off of performance cars that get swapped out for larger units to upp the power.
The MHI td05h-14b-6 off 89-94 Mitsubishi Eclipse / Eagle Talon Car with 4G63 Engine chra 49178-09010
It is most likely the cheapest and easist one to find. They are also easy to fnd in local wreckers.
There are also td04hl that come in a 15g, 16t and 18t compressor wheels off of late 90 volvos and sabbs with 6cm and 7cm exhaust housings. Ill have to post up some reference numbers later. All map well and usually run 11lbs internal wastegates. Any one if these turbos would do what you want it to. If you have a bunch of different types you can look for reguarly on ebay you have a good chance of getting one for a good deal. Lots of aftermarket flanges and wheels and parts as well.
Now in the 2000s there came available some pretty wild evo turbos around with divided housings, 360 thrust bearings and very nice compressors, but im still learning about them and am not sure how it would performe on a 2h. It would sort of be a bit overkill for what you want. I happen to have one in my garage that I plan on playing with, sometime after my 4yr old graduates from highschool. Keep in mind that I found it for 350$, on ebay, so if you know what to look for you dont have to pay tons of money.
I would be weary of buying an ebay turbo that is not genuine MHI. There is one for sure way of knowing that it is not genuine, it will be brand new and very inexpensive. Im sure some will work well, but that is for another thread. If you get an old turbo with normal play and map it for your truck and run 8lbs off it, it will last a very long time.
You can also message a guy who sells stuff from a wrecker in LA. I have bought from him before and he is a stand up guy. Had to do a return and he was good to deal with.
Goes by datauto22
http://www.ebay.ca/sch/datauto22/m.html?_nkw=&_armrs=1&_from=&_ipg=25&_trksid=p3984.m1439.l2654