rear brake rotor

I am trying to complete the 2nd step in the restoration of my 80 kz750e. I am having a real hard time finding a new rotor for the rear. Any suggestions; advice?

I bought good used rotors off ebay as spares. If you are trying to buy a new rotor, you seriously won't believe the price from Kawi (assuming they sell them). Like $400....

If the rotors have to be turned, they have to do it on a special tool which is a surface grinder they use on flywheels. It's a little more pricey mut WAY cheaper than a new one.

Babbitts does not list that rotor as available from Kawi so used is the only way to go.