Kubota power steering

[varmint]

I just bought a nice used Kubota B8200 (470 hours), with four wheel drive and turf tires, a loader and a rear blade. Having used the tractor pretty hard to clear the blizzard that dumped 29" of snow here, I have come to the opinion that I want to add power steering, and would like to hear from anyone with experience in adding it to this type of tractor- what to expect, costs, etc.
This is my first Kubota, and I am really pleased with it so far!
Other than changing all the filters and fluids, it seems perfect.