The info below comes from the Kubota website. If memory serves me, the PTO HP was low on these machines as they were more of a TLB then a utility tractor. I've seen a few around here. All had loaders and were used by landscaping companies and smaller home contractors.
B2150E
B2150DT
1990
Gear
24.0 Gross HP
2WD
4WD
B2150HSE/HSD
1990
Hydrostatic
23.0 Gross HP
2/4WD
If you do a search on Machinerylink.com, you'll see three or four listed.