That Wisconsin makes me smile- I got to help tear down/rebuild one years ago and (a**** other jobs) was in charge of polishing all the aluminum bits... including all 16 valve spring cover halves
Dwight Bond (Gibbon Ne.) put together a big 'B-B' truck with I believe F-350 brakes & not sure but seems even a dropped axle, don't recall what rear axle, his daily driver is a 32 pickup..
Looks like a great project, @Pete Eastwood! Similar in style and look to what I'm building in my head, although you're about 10 years earlier than my vision. Following along for ideas and inspiration!