Yeah, a great car Ken, its one of three that were constructed by Autodynamics in 1970. Dan Gurney's All American Racers did the initial fabrication work on them, including the rollcage and other race specific stuff, and they also ran them through the acid dipping process. AAR also built four Plymouth Cuda's for themselves, as they were the factory Plymouth team in the 1970 Trans-Am, while Autodynamics were the factory Dodge team.

Apparently the Challengers spent too long in the acid bath, or they weren't cleaned properly, because driver Sam Posey recalls how they fell apart as the races took place. The floors were especially bad, and he said after a while he could see the ground rushing past beneath as the body shell broke apart. They'd weld up all the cracks between races, then new cracks would appear.

Autodynamics only completed two of the three shells as race cars. Posey ran one car for much of the season, before they started running the second car late in the year, as Chrysler made it clear they'd only support one team in 1971, and it'd be the team that won the most races. So a second car was run, with the third shell never being completed. The third shell was finished for the first time only a few years ago, but its my understanding that as it wasn't raced in period, its not eligible to run with Historic Trans-Am.