Just don't ever have 4WP install anything for you! It took them 4 separate tries to get my front locker right and last Friday they had to re-do the entire job - the correct way. They were a little pissy about it towards me too. Like it's my fault they f***ed up a $1250 job. They didn't even offer me anything even though I live over an hour away and put in over 8 hours of driving back and forth to get the job finally done right. That doesn't include a 2nd vehicle to pick me up when they had it overnight. Now I have 2 holes in my front diff for my ARB air line (the old one is plugged because they drilled it in the wrong place). I call my axle hole the mark of the 4WP "axleholes", LOL.
Everything finally works good now, but I am so over that place. I'm just warning others on here that they are hacks. After my experience I won't even buy parts from them anymore. I would rather flush a $50 down the toilet than get a deal from 4WP.