Well the verdict is in. The mounting holes are in the same place on both 2 and 4wd trucks. The plate that is used to mount the steering box on the 4x4 is held on with only 3 bolts and only uses 2 of the 4 holes that are used to mount the 2wd box. It is 17" from the top bolt hole to the end of the frame on both trucks. Check out the pictures. This is the 2wd.