I think I found an answer!
This is for a Grand Vitara / aka GV. The original source info is gone, so glad it got cut and pasted to here:
http://nbs4x4club.com/forum/index.php?topic=268.0So, what I needed to know. The GV [mid] shaft may be different, but the stb / spud should be the same :
Now, the Passenger side (right side):
Compare the two CV stubs. Notice that the GV is
shorter than the Kick. The difference in the two side
lengths is because the airdiff moves the centerline
over about 1" towards the passenger side. The
passenger side is a floating stub, and the shorter it
is, the weaker it is. YOU ARE MAKING THE FRONT END
STRONGER!
What you want to do here is swap the Kick stub onto
the longer GV mid-shaft and outer CV.
I guess I needed something (else) to do tomorrow AM.