dakota
Guest
The 2166 is the update of the old 1660. That means your 1680 is bigger than a 2166. Besides from runing the 1680 and talking to a friend owning a 2188, I would keep the 1680. The 21 series had a lot of problems. That's why it didn't take long for CASE to launch the 23 series. Your 1680 is easy to rebuild and it can be tuned up to run with a 1688 easy. YoungFeller what I have read so far about your technical interest and questions, I think you can rebuild a 1680.