turbine wheel replacement
 

Hey turbo experts, are turbine wheel/shafts pretty easy to come by? I'm rebuilding my T28 and I've already replaced seals, bearings, and the compressor wheel. I'm just second guessing the turbine wheel. The wheel, blades, and shaft are fine but the end nut has been ground up pretty good from previous balancing. Should I find try to reuse it or should I source a new wheel. I guess I'm just not sure of a shops capability to rebalance this thing. I've got a picture of the wheel if anyone is interested in taking a peek :-) Thanks!

Picturess please