I think the MII is the way to go,however it would be quite a job to put your truck back to original.On my 55 2nd series I had to cut out the front crossmember,and box the frame.I had to use different motor mounts because the originals were mounted on the front crossmember.It is still a lotr easier than cutting the frame and sub framing.The one I used was from TCI.Mainly read and follow the instructions.