[justcobra]

Suggest that you Google and there should be enough information as to the Torsional Beam Test Procedure or else these Professional Mechanical Engineers charge around $1200 plus for this test.
I have spoken to some Cobra Builders and they are going the same road in respect to this procedure like youself.
For example one guy has welded up a Venom Motorsport chassis and the other has a SA replica chassis which was aquired on Ebay this year.