When I was looking into building types, the steel constriction I liked best was Miracle Truss. They have a clear span with wooden purlins so a Do It yourselfer could source material local and save on shipping. Allowed for traditional interior and Exterior finishing. Miracle Truss  BTW...I went stick built. Cost (materials of all types) was a driving factor. 2011, 40X50 stick built, $13k (2X6 walls, insulation {walls and celling] trusses, Doors, Vinyl siding, architectural shingles) Another $13k for masonry, $10K electrical, heat and interior finish.
'01 P1500, Blown/Inj BAE,/Veney ,Bruno/CS2,Dana 60
'01 Dodge 3500 S Cummins Auto, Fresh air kit, 4" Exhaust,
'05 Dodge Magnum R/T - Too Much to list
'60 Willys CJ5
'01 International LPX - Project,DT466, Allison
'64 Plymouth Valiant, Inj 528 Hemi, 2spd
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