Pardon the newbie questions.
I haven't had the opportunity to visit a HDT conversion shop yet. I intend to soon. I read on another thread the standard floor tubing is 2"x3" 11 ga tubular steel, 16" o.c. and for walls 1"x1-1/2" 16awg tubular steel, 16" o.c. where possible. Most of the tubing I...