there is a brace inside the fender, center of wheel opening that you will need to break free once you get the inner fender plastic out.
the rest is simple as mentioned.
i'd spray the bottom 2 beside the rocker panel first tho.
1990 xj 8 inch Staang's Fab long arms
1999 xj. current daily driver
2000 xj 4.5 inch rubicon express, 33 timberlines
1997 tj 2 inch bb, 33 mtr, trailhead customs tube fenders, titan 10k winch
1999 tj 2 inch bb, 2 inch bl, 33 mtr
I get mine from TMR Customs