i have the rockstomper motor mounts and they do make the cab vibrate alot more than the stock motor mounts. it was really bad in the cab but once i hade the whole inside of the cab sprayed with bedliner stuff it made a huge difference in the noise.
![](http://i59.photobucket.com/albums/g304/Adric1/4runner/5-29-072.jpg)
![](http://i59.photobucket.com/albums/g304/Adric1/4runner/6-1-073.jpg)
![](http://i59.photobucket.com/albums/g304/Adric1/4runner/6-1-071.jpg)
here is a chart of the transfercases and transmissions with years and chain or gear driven, i cant rememeber what forum i found it on.
Year Model Application Model Speeds Splines 1st Gear Engine Transfer Case
1979-1980 Carb L43 4sp 21 spline 3.67 4cyl 20R Gear driven Top Shift
1981-1983 Carb L45 4sp 21 spline 3.93 4cyl 22R Gear driven Top Shift
1981-1983 Carb L50 & L52 5sp 21 spline 3.93 4cyl 22R Gear driven Top Shift
1984-1986 Carb G52 5sp 21 spline 3.93 4cyl 22R Gear driven Forward Shift
1986-1988 Carb G54 5sp 21 spline 3.93 4cyl 22R Gear driven Forward Shift
1986-1987 EFITurbo R151F 5sp 23 spline 4.31 4cyl 22RTE Gear driven Forward Shift
1985-1988 EFI W56 5sp 21 spline 3.95 4cyl 22R Gear driven Top Shift
1988-1991 EFI R150F 5sp 23 spline 3.83 V6 3.0L Chain driven Forward Shift
1989-1995 EFI W56 5sp 21 spline 3.95 4cyl 22R Gear driven Forward Shift
1989-1995 EFI/ADD G58 5sp 26 spline 3.93 4cyl 22R Chain driven Forward Shift
1996-2002 EFI W59 5sp 23 spline 3.95 4cyl 2.7L Chain driven Top Shift
1996-2002 EFI R150F 5sp 23 spline 3.83 V6 3.4L Chain driven Forward Shift