Sieg,
I thought I saw saw engineering numbers on this site after someone installed frame connectors. But, I don't have anything quantitative. I got to see a Pro/Stock car on GM's test equipment, simulating forces, to see where it flexed & didn't ... which was very helpful ... but nothing with stock bodied cars.
I know the frame connectors, when welded in, add a degree of stiffness. And when the roll bar utilizes braces from the main hoop ... under the cross bar ... attached to frame connector ... the roll bar is much better prepared to withstand roof impacts ... than compared to just welding plates to the sheet metal.
Running door bars at the correct height and effectively making this an 8-point roll bar is going to raise the level of safety while improving the torsional rigidity of the chassis quite a bit.
I just can't put a number on it.
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Ron Sutton Race Technology
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