I haven't owned a ZJ but XJ and WG/J front springs can be done without a spring compressor.
Disconnecting upper control arms is usually all that needs to be done to lower the diff enough. If that's not enough then disconnect the trackbar (panhard) too.
I fitted 4.5" springs to my XJ with no compressor and the XJ has the bumpstops to contend with also. The WJ bumpstops are inboard on the 'chassis' rail which makes it a bit easier.
Are ZJ lower arms shimmed like the XJ for adjustment of pinion angle/castor?
The WJ isn't, unfortunately needs adjustable arms.
Cheers,
Ruffy.
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'96 XJ, 4.5", 33" MTZ's, Twin Locked (Gone now)
2003 WG Overland, 4.7 HO, 4" lift, 33" Coopers
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