An FC 353 would be a 1948 model at 161" WB. As short as it is, it isn't really useful for anything but pulling mobile homes and it would be a moving roadblock by today's standards. Someone may have cut about 5 feet out of the frame and spliced it back together. Or someone may have used hot rivets. I still have a .498 shank rivet gun that will buck pretty large hot rivets. That thing has been around almost 65 years. No telling who modified it.