1st Gen Global West Lower Arms with rotating perch

[Dons67]

need lower control arms with rotating perch so i can index my springs after i cut them a little as car sits too high currently

[regal454]

Are these the lower control arms you have:

http://www.globalwest.net/1967-1968-1969-camaro-lower-control-arms-polyurethane-bushings-global-west.html

If so, can't you index the polyurethane spring seat to work?