As I understand, you're looking for the 4 rubber bushings that secures your factory 4WD shift linkage plate to the tunnel?
I've never been a fan of this linkage setup and a much better solution is the direct connected linkage replacement, such as the one linked here:
TeraFlex TJ/LJ TRANSFER CASE SHIFT LINKAGE ADAPTER KIT
XJ owners have more options for this replacement linkage, as Azzy Offroad and Boostwerks both make upgraded 4WD shift linkage solutions which eliminate the factory linkage and create a more positive engagement solution. I've run the Azzy Offroad linkage on my XJ for over 5 years and the shifts are always precise.
There are also some cable shifted t case activation options on the market.