[Myron Piatek]

In my opinion, the most structurally sound way to install frame connectors is to connect the front and rear subframes with the connectors welded INTO the floor where clearances above and below allow. It basically requires a snug channel where the 2x2 or 2x3 tubing would pass through the floor and would be welded along the length. Some higher floor sections may not need a floor cut. Then an 8 pt. roll bar would include 2 legs from the sides of the main hoop, behind the seats, being welded into the top of those connectors. "Triangulation" is the key to a stiff frame/chassis.

But a simpler way would be to fit a 2x2 below the floor or pushed slightly up into it and welded at all contact points, including the roll bar legs. I believe .083" is a popular thickness but have heard as thin as .065" being used.