I'd continue looking for that specific coil. I'm sure that other Yamaha coils from the same years should fit. Make sure you check it out with a dealer to verify the electrical data. Look for something in that range.
Here's a kicker. On most Husky stuff that I have run across they use a stator/coil combination. Husky put chips in the coil so you have to run a matched set of stator & coil combinations. I see coils for sale on ebay, but without a matching stator to go with it you may just be throwing your money away. I'm sure that they only have a couple of the combinations available, it's just that you hope you end up with a match of some kind and it works.
Keep looking, and you will find it. Don't forget salvage yards.