the only model number i can come up with for that particualr engine is: T04B15, its placed in the same group as the HT3B........im not sure if that helps you too much
I have a friend that has a turbo that I think is off of one of those loaders, it is a T-4 flanged, Non wastegated turbo, I was wanting to see if I gave the model number of the tractor, that I could come up with a turbo model number, I will try to get the part number and ser. no off the turbo the next time I see him.