Tube chassis

Dartnut said
Try thinking out of the box and look up prices for another brand that might be close in size to your car and then modify to fit.
Ford Falcon or a '66 and older Chevelle or Nova/Chevy II come to mind..........

I've looked at s&w and Chris Alston, neither gives any info except wheelbase. I've heard someone using a duster kit but had to modify quite a bit.