Ideas on getting a CDI box for an ATV 1988 Yamaha YFM 350 ERU Moto-4 that isn't $500 from Yamaha..?

I am looking for this CDI box and it is extremely hard to find...Can not find one on Ebay or anywhere else...Have found at Yamaha but it is $500 and the ATV isn't worth that....Any other models or years that might match this CDI box that I could find? Help please....Ideas on getting a CDI box for an ATV 1988 Yamaha YFM 350 ERU Moto-4 that isn't $500 from Yamaha..?
Heres what I recommend:

1)check local phone book for "motorcycle salvage yard"

2)go to it and take the bad module with you.



Chances are it can be matched up with something there. Or at least call them on the phone and ask.



If they don't have it, then do a web search for motorcycle salvage yards and enter exactly what you have. In the comments sections, make sure to put something like "please no stock "we have your part" answers as I want the price as well as availability". Seems some salvage yards use a generic email answer that is pure b.s. They may not have the part, but indicate they do. They also don't list the cost. So be honest up front with the salvage yards and they will be honest with you. The only problem is that you must be certain that the unit is good before installing it. I always test used parts before installing them, and inform the salvage yards that I will be testing the part before it is installed, and if it fails any of the tests it will be exchanged. Give no nonsense and take none. Perhaps I can get away with it because I operate a repair shop, but if you treat buisness people with respect it shows you mean buisness.

carolina skiff