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A new era is born.

A remarkably preserved 1991 Buick Regal Custom GS has emerged for sale, presenting a rare opportunity to own a low-mileage example of an often-overlooked coupe from a transitional era for GM.

“I got kicked out of a couple of tracks because the car increasingly became faster. They wanted me to install a roll bar after it became an 11-second car. And I says, no way am I going to cut a car up ...