Well eff I did not own an XR or a YZ 80.
Steve you should restore it! PE's could be trouble for plastic I got stuff from vintagesuzuki.com and fullfloater.com also some OEM stuff can be found from Suzuki.
I was asking $2500.00 and I think I sold it locally
Nice '79 stainless, I raced a '77 and '78 RM125 and have some parts still.
Good luck on the CanAm.