Kelly, Does your tractor manufacture offer a turbo model? If not you may find an after market company that sells a kit, But I would never buy a used turbo unless it was certified good! The turbo is the most important part and you must know that the one your going to use is good , bearings good , balanced ,oil cooled, etc.
You only want to do this once may as well do it right, Just my opinion... Also is your power way down as is? or do you just want more?Injectors clean? Turbo may reqiure larger injectors to prevent a lean conditon(heat problem).
There is more to it than just bolting a blow drier on top. /forums/images/graemlins/shocked.gif /forums/images/graemlins/wink.gif