Does anyone have a chassis diagram for one of these? Not looking for anything dimensioned, just something that would give a general idea of where they put the tubes.

A B6 for sale with a few photos

http://www.race-cars.com/carsold/chevron/b6dbe8/b6dbe8pp.htm

and a few pics of a B8 rolling chassis

http://www.kaeserfahrzeugbau.ch/chevron_rolling.htm

HTH,
Adam.