We bought this on a Big Iron Auction think we could make it work on a 9770.  We could have but it was going to take almost the same money to do that as it was to buy a new one for a 9770.

This one looks to be in great shape, the previous owner did mention he would replace the paddles before using it but they would probably run a while.  I beleive that it would fit a 670 and 680.  I'm not eactly sure what a new one like this is but one that fits a 9770 is around $14,000.  Message on Nex-Tech or call/text Trey at (620) 388-2908.