I was on the ARB webite and they have in their application guide that the front locker does not work with the 3.0 gas motors But they have one for (28 spline, 8.0" Ring gear) nothing for the (25 spline, 7.25" Ring gear). Oddly enough the front locker is the same for the Montero Sport, and the trucks, Model number RD110

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