3" or 4"
Only your stock frt DS. With 3in it's at a bad angle, 4in really bad angle on the upper joint. Plus, members on here with budget boost have torn that boot on the ds. So really, that's the main wear out, change out part.
Now this is my experience, so take it for what it's worth. I've noticed no other part besides the ds and I changed it out after adding adj frt lowers to my lift . Berfore I had a BB and then went to a 4in Superlift.


