Here a link to a fabulous hardbody chassis build by west coast racer and Slotblog member, Keith Tanaka. Keith's been doing this kind of thing since the '60s, so pay close attention as a master demonstrates how it is done.
Building '55 Chrysler - step by step
It is assumed that this car was built to compete in the D3 Hardbody racing that happens at Buena Park Raceway in CA.
Couple of pics from the build website...