are you sure your hubs a are free spining. The wheel lock is on the transfercase and that driveshaft should not be spining unless you have it in 4wd or if one of the hubs is locked causing the driveshaft to spin. check those things out

91 Montero LS "Sandstorm", Auto, Dual Bouncy Seats, 2" Suspension lift, 2" Body Lift, GENII front IFS, 32" MT tires

89 Raider "Trailbreaker", 3.0, Auto, Dual Bouncy Seats