I have a set of new disrupters plus the recommended hard faced separator bars for a 1480, so they should fit a 1680. Will sell at quite a discount to new.
I ran a set in a 1680 standard rotor years ago and loved them. they will really help in tearing up the bean stems.I never really cut a lot of wheat,but I was happy with the results in what wheat I cut They are worht the time and money involved. They are one of the few aftermarket products for a combine that really work. Will