Early A-body torsion bars!

[65dartcharger]

Hi! I have gone through my torsion bars for my restoration of my 1965 DartCharger. At the back of the torsion bars there are the last three digits in the partnumber on on the second raw are some letters. On my left bar is CEL och on the right bar CJZ.

My qestion is; What does those letters stands for? My car is produced at the LA plant in January 1965.

Any help would be gladly appriciated

 

[C130 Chief]

Some sort of vendor or batch code? I've always just used the part number last 3 for identification.