Actually, the inspiration was the production-class race cars (now Outlaws) of the '60's. Just coincidentally, the Michigan-bound 6 cylinder Speedster in Excellence and mine were built about the same time and the Stonegray color choices were just that . . . coincidence. We differed in interior color and, of course, that 2.7L engine of the other. They are pretty similar in most other respects.
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