Quote Originally Posted by SilverBullet75 View Post
Note: after months of having the Napa shafts on, I don't recommend them unless your cups are replaced as well.
Bad vibration since day 1.
Ok, changing my opinion 180 degrees on the NAPA shafts!

I just installed the HD torsion bars from Indy4x, and also lowered the front by 1 inch.
Lowering plus 2 inches of Diff Drop put the front shafts back to horizontal/stock angles!

I turned the TOD on today (I have an on/off switch). All is fixed! I had no clacking, vibration... nada!

Back in business.

So, lesson learned...
The shafts need to be as horizontal as possible in order for the balls to ride in the cups properly.

Anyone have the clacking issue on stock shafts while lifted?