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[Editor's Note: This article originally appeared in the December 2020 issue of Grassroots Motorsports. More recently, Brian Faessler won first place in the 2022 Ultimate Track Car Challenge with this Mustang.]
In a world where the fastest track cars feature tube chassis, bespoke carbon tubs or low-slung prototype bodies, Brian Faessler’s Mustang began life as just another unit off the Ford assembly …