If wanting a real ROPS then buy a different, newer tractor. If just wanting a canopy or FOPS you might find something. That tractor's rear axle doesn't have the structural capability to mount a ROPS; it wouldn't pass a ROPS test and could fail in an actual roll over. No manufacturer is going to expose themselves to such a liability. Possibly could design a system that "wraps around" the transmission/differential case that would handle the structural loads/ but it would be a real eyesore and pretty much one-of-a-kind; probably you would be the only buyer. If not operating on any significant slope, just forget-about-it. Otherwise buy a newer tractor that was designed to accommodate an actual ROPS.
