WTB Cat 963 used undercarriage

I'm in need of a used undercarriage or just tracks for a Cat 963A 21Z. Mine has 22" tracks with 37 pads.
I use mine as a farm tractor so buying a new set doesn't make $ sense to me.
I'd like them to be 50% or more.
It is my understanding that the track groups for a 963B and some of the 963C model will work.
Please let me know if you have a set to sell.
I'm in North Georgia but I'm willing to travel or have them shipped.

Thanks,
Tracy
404 580 3623

WTB Cat 963 used undercarriage