The 1970 Pontiac "Magnum 400" was another.
I recall reading in the Jim Wangers book that in the early 70's, he special ordered 50 Vegas in black, a color not available as a regular production color. He marketed them as something only his dealership could get, and after a dozen or so were sold, people started going to their favorite Chevy dealership asking to order a black Vega. The dealers couldn't special order just one black Vega without passing the additional cost onto the customer. Wangers bypassed this fee because he ordered 50 black Vegas at one time. Wangers said some dealers were getting so jealous of his black Vegas that they started telling customers that "those Wangers Vegas" had crappy paint jobs, and that the cars were resprayed at the dealership.
By the way, the story of his 1973 Nova 454 LS6 conversion for a customer was priceless. The EPA got involved, and that effectively put an end to the era of dealer engine swaps.
Mr. Wangers was THE marketing guru.