Not sure you'll find a perfect drop in replacement, but if you know what size tuner peg you've got (3/8" or 1/2") I'm sure you can find something that'll work.
Bill at hip shot is a god. I had a 30 year old hipshot extender that exploded. Discontinued model. Emailed them and Bill said mail me the pieces. A week later I had a perfectly rebuilt unit. Awesome company, awesome customer care.