the Dodge Diamante

JS27R0B100022 was the first of what would be only 12 Hemi Challenger R/T convertibles ever made. Originally the car was a loaded triple-black (TX9 Black with a black leather interior and a black top) 4-speed car and reportedly the only one of the 12 to come from the factory with a Shaker hood scoop. It never made it to a dealership. When it rolled off the assembly line, Chrysler retained it and sent it off to be transformed into a factory concept car which at first was the Yellow-Jacket which later morphed into the Diamante.

The original Yellow Jacket did not create enough consumer buzz for Chrysler on the 1969 show car circuit, So in 1970 Chrysler decided to do a more extensive remodeling of the Yellow-Jacket and the end result was the Diamante show car as shown here.

The Diamante continued to tour the show car circuit through 1970 and into 1971 before it was retired. Chrysler placed the car into storage for several years before it was finally auctioned off in 1978. The car eventually found its way into the hands of noted Mopar restoration specialist and collector Steve Juliano.

https://forum.e-bodies.org/cuda-and-challenger-general-discussion-roseville-moparts/2/random-hemi-e-body-of-the-week/3034/60