front A Arms fits Caddy or LaSalle "40 series 50,52'60c.62,and 72 (except cc) + '41 thru '49 all series( except cc)
right side part # 143 5824...... left side part# 143 5825
Jack Carroll # 18687
978 433-6257
Have you tried this guy? John Gately.
He usually has what I'm looking for if you don't need brand new.
http://gatelyrestoration.com/ (http://gatelyrestoration.com/)
Wes in VT