They go in the flange just like a wheel lug. Check for clearance in the heat shield and pound it out. Use some PB to help out. Going back in may be difficult but possible. You can get new ones online factory Chrysler parts or a Mopar site. If you need it I can look it up just ordered two last month.
89YJ 2.5L TBI, AX-5, NP231 SYE, Ford 8.8, Yukon Grizzly, Tom Woods Shaft, 33" BFG T/As, 4" lift, Warn VR10000s.
AF Jeep Club Tail #184