I just swapped the RE shorties for the LongArms and all I can say is that it should be a criminal offense to even think about installing short arms on a 4.5" lift.
The difference is more than I could have even imagined (I was told....but i really couldn't realize) the difference is amazing !
The ZJ now rides....like a ZJ only taller and with the standard quirks that go with lifting a Jeep. As an extra bonus the squirley death wobble is gone too (hope I didn't jinx myself)!
FWIW....don't even consider the short arms for a 4.5" lift.
Photos to follow after the bugs are all sorted....
Cheers !