Everyone knows about the Trans Am Javelins famous in the late 1960's and early 1970's.  What you probably don't know is that there is only one other AMC car to ever run a Trans Am race.  That car is an AMC Concord which was campaigned on the west coast by Buzz Dyer who started racing the Trans Am series in 1970.
The Concord competed in a total of six Trans Am events from 1978-1981 powered by a TRACO built AMC 366.  The car also saw action in IMSA events with a GTO entry and several IMSA AC races during the same time frame.  During this period the car also competed in several SCCA regional races in the San Francisco Bay Area.
In the early 1980's the Trans Am series moved to full tube frame chassis's and the Concord was immediately out dated.  The car however had many years left in it and continued to complete in SCCA regional races as a GT-1 car for another 10 years.