Be careful to ONLY install a dropped Pitman arm on a TJ when you have modified the steering geometry in such a way it becomes required. Like if you also installed a dropped upper trackbar mount, you then need a dropped Pitman arm. Without a dropped upper trackbar mount, you should not install a dropped Pitman arm unless you have a sky-high lift like over 6".
Installing a dropped Pitman arm on a TJ when it wasn't required will
cause bump steer. What's funny is I've driven a few Jeeps that had moderate-to-severe bump steer and the owners didn't even know they had bump steer. They thought the bump steer they lived with (they didn't know their steering problem had a name) was just part of owning a lifted Jeep.
Bump steer, by the way, is when the front suspension cycles up and down, the steering and steering wheel is forced left and right. Hit a big dip or bump in the road and the steering wheel can be suddenly twisted right out of your hands. Hence the term "bump steer".