The OEM ones will give you .75" max. Your WK is lifted, get the longer ones. As you said, people report different numbers. If you get the longer ones and you have too much rake for your taste, add a strut spacer.
2006 Black 3.7 WK, Modified OME HD ~3.5'', Bilstein 5100's, 1.5" RC Wheel Spacers, Plasti-dipped JK Moabs, 285/70/R17 Duratracs, 7W Cree Reverse LED's, Mopar front and rear tow hooks, 2 Hella 500ff's behind grill, Expanded sheet metal grill, ORT badge, Tail light guards, Firestik 3', Aux. input, Black housing headlights.