Send me the pictures we talked about today and I will take a look at them. As far as I know Bobby never built a tube chassis car. Scorpion 1 thru 4 were aluminum channel , he did build an aluminum channel car for a mail man but it was never finished. The Scorpion V was built by Conny Swingel at Garlit's shop as a Garlits chassis. Scorpion VI was built by Henry(Moose) Schroder of T Bar chassis.