The chassis I will build on is 83" wide with the "wings" forward and aft of the wheels and the bed frame is 130.5" long. It has a 4' tongue. It is in good shape and has been wire brushed, rust treated and repainted.
The original step was mounted a little too far back so I will have some supports welded closer to the front.
I'll try to reuse the original plastic fenders as they will help keep weight down.
And I don't know what kind of tongue jack mounts here. I'm not sure if I will like it or it's price so I will likely weld a triangle plate behind the coupler and mount another Jack-E-Up mount and an a-frame jack. I like the Jack-E-Up I mounted on the woodie.