Great build! I love seeing more garage built projects! I have considered a round tube chassis for some projects I have in my head. What is your plan for torsional stiffness? That has been my main concern when planning one in my head. I love the look in the form yours is, but when you add all the stiffening plates between the bars as I have pictured, they loose some luster. I would really appreciate your thoughts. Keep up the good work!