The entire Hyo range of bikes from scooters to 125, 250, 650, Quads, "ALL" use the same RR.
I own both a GV250 and a GV650 (and other machines) and I have swapped the RRs from each machine many times when needed. The diode based RRs ALL prematurely fail, on ALL brands of bike.
Quite frankly, I am sick of replacing OEM sh!t RRs with replacement sh!t RRs. Why manufacturers risk their reputation by using cr@p electrics is something I can't understand.
Do yourself a favour and just source a MOSFET replacement. All the best brand Japanese bikes in the more prestige level use Shindengen RR. Even MotoGP use Shindengen.
Try your local Suzuki or Yamaha dealer, but you will pay much more from them.
If you insist on replacing your sh!t RR with another sh!t one, just buy any 3 phase RR that can deliver 10 amps or more and solder up the correct series 250 plug/socket for the 3 in and 2 out wires.