Looks like both of my front headrest rails are shot

. The end where the headrest rod is held or connected to the rail has broken so the spring wire has nothing to push on. Looks like my part number is 124 970 01 26 and is NLA. I have seen some 124 970 02 26 out there as well as 140 970 01 26. Has anyone tried to use either of the alternate part numbers in place of the NLA?