HX35 and presumably HY35 are very old technology turbos. I know the HX35 came on early Dodge Cummins trucks and you can likely find one cheap, as the Dodge guys want to upgrade to newer tech or twins. Holset makes a great turbo, but there are better and more efficient turbos in that size for sure. Check junk yards for OEM applications, tuning shops that install or upgrade turbos and import car forums, where people seem to always have more money than brains, when modding some of these cars.
The hx35 was early 2000s do not that old...the fact that they are cheap, common, and robust wings me over.
Most of the newer turbo are vnt and I have little interest in the. The hx35 since stock size on cummins 5.9 think would be a great upgrade turbo for Fuso 4.9.
But that being said if it is a t3 flange turbo options could be limitless