There was a time when the "hot setup" was a Ford V8-60 in an EL or HL frame. Bikes with car engines have been popular for a very long time. Back in grannies day, it was 4 cylinder Plymouth engines in Henderson frames.
yeah...seen a couple of them up here at the lake, they r the Boss Hoss. Im not sure but I think they make them in Dyersburg Tn..I do know my cousin and his ex wife used to be "models" on the Boss Hoss literature (and they lived in Dyersburg)...to me they just dont seem "right"..but I guess they have sold quite a few to Saudi Arabia from what my cousin told me about4-5 years ago.
That was my thought also. Building it just to show you did and showing it at shows is one thing. Riding it.. not my cup of tea. I would worry about frame stress after a while.