Switched spindles and now there is interference

The NUT looks to me to be the issue. TOO thick.

swing69
That's not a picture of the op's vehicle.
The "nut" hasn't got anything to do with it, as he states he has approximately three threads showing on the bolt.
It would have to be the length of the bolt if it's to long.
Anyway, factory self locking nuts for the LCA bolts are pretty thick, in their design.

Look here, as i stock them, and sell them, from time to time.

http://www.forabodiesonly.com/mopar/showthread.php?t=291334