and if the double nut doesn't work use a pipe wrench and a hammer...thats what we did on my bros 97...the double nuts stripped the threads so we just took a pipe wrench and hammered it on and it turned right out.
Oh and if you dont wanna buy one you can make one for a few bucks at ACE...just get some 1" square tubing and longer bolts and you are ready to go.
This really helped me out. I just did this on my 98XJ and I tried the 2 nuts, it stripped the threads. Then i used a pipe wrench and they both came out not to bad at all. The 1" square metal tubing I bought from ace seems a little this but hopefully it holds up good. I just used a come-along to line up the holes again. I strapped it to the leaf spring and the cross member and slowly cranked down on the come-along to get them to line up. My vibes are gone, very very slight vibes, but someone in the car with me would not even notice.
Thanks much guys
Currently a 1998 XJ With a RE 3.5" SR kit, OME long travel shocks, RE track bar, Gas tank skid plate, Chrysler 8.25 rear, 31"x10.5" Grabber AT2 tires on 15.5" rims with a 3.75 BS.