I don't know how alike they are to ZJ regulators but I stumbled across the following thread this week when searching for something else...http://www.jeepforum.com/forum/f13/broken-window-regulator-rollers-i-got-cheap-fix-you-902285/
the later type, where the carrier is all plastic are the ones to get, you'll need to swap/change the plugs over and I think re-drill a motor mounting bolt hole.I trawed ebay for mine, came from gloustershire I think.