I have done it B4 not a big pain to do but I am a professional fabricator so making all the body mounts was not to hard. I also had my own shop with two lifts to make it seem easier. As far as gas tank I used a Ford gas tank that fit between the frame rails. If I was to do it again I wouldn't do it because the second gen frame was a 88 with a v6 3.0 which made the engine swap to a 3.4 easy but was stuck with ifs frame that sucks for making a low cog crawler. End result was to tall of a rig for my personal preference.
