Sorry it took so long for a reply but your best bet would be a Novak cable shifter if the t case linkage is to blame. To check you can get under the jeep and see if there is any play in the linkage. You should be able to find pictures of where to find it with a quick google search.
/I ,[_____], Goodyear duratrac 33x12.5r15s
I---I_ -olllllllo- 4" currie lift, savvy arms.
()_) ()_)—o-)_) Cragar or Procomp soft 8s pioneer deck with polk db series speakers