Sway bar links - different lengths?

[schardein]

Was doing some parts research and became curious.  Rockauto lists two different sway bar link lengths:

 

7 1/4" long one used to 5/20/91

 

8 1/4" long one used after 5/20/91

 

My Cherokee has a build date of Mar 1991.  It has the longer links, but they have blue bushings and I suspect they were replaced at some point.

 

My Comanche has a build date of Oct 1990.  It has the shorter links and I bet they are original.

 

Does anyone know why/what changed?

 

Did they change the axle mounting point?  I don't have a later axle to compare.

 

Seems to me one could be 4wd, other 2wd, but there is no mention of that at all in the parts listings.

[HOrnbrod]

Maybe the Chrysler engineers finally realized they could achieve the most suspension travel and flex possible w/o binding at a ~10*-15* angle above horizontal and modified the links accordingly. My guess.....

 

[schardein]

Ok, now I'm curious what the angles are with each of the two different links.  Another item for the to do list...