did you read the complete thread? he has lots of pics and he drove it stock and modifyed. its about the same for power and brakes with 2000-2500lbs off the tail end.
back frame section has crossmember in it from same section of a scrap frame. and he hasnt yet added any real crossmember to the frt section. but you can see stock there isnt any. but he did put gusset plates on it and used the big walking beam piviot mount plates in the back as big fishplate sections.
i am going to build one soon. so watch out. but mine will be power gear box setup for power steering.