You will need all the spring hangers and front core support mounts from a 4wd. I will do my best to remember what all I had to do. I do believe that the first x member that brake valve mounts on is different in height. I made my engine x member as I put a dmax in. Rear shacle kit for the front springs can be purchased new. Not a horrible project. I never got everything put together but rolling chassis is complete.