Magneto for Toro CCR2000 snowblower?

Trying to repair my father's Toro CCR2000 model # 38180. It's in great shape and was running very well but recently won't start. He took it to a small engine repair place and after several attempts the guy told him it needed a new magneto. Guy suggested we do it ourselves to save a lot of money. Searching internet part number for the magneto coil is 81-0330 but the part has been discontinued and is no longer available. Any recommendations on what I might be able to do to obtain this part? Thank you.