Rich I would say that a simple 4-point bar does help stiffen the car and is ok to install. My only concern would be for rear passengers. Pipe wrap would be a good idea if you do have passengers back there.
I have a 4-point bar and my son will spend time back there, so I tried real hard to get all the bars as tight to the body as possible....but I still will be wrapping them for his safety.
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Tony
'68 Camaro
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