i got a set from crites, look like oem but they are heftier, thicker steel rubberized. they sell them for galaxies and mustangs. 4 years haven't broke one yet....
oops i'm getting old company name corrected
they were for a 67-70 mustang not cheap but good stuff, 180.00 set
crites......740-983-4777
www.critesrestoration.com