We had heard from D&J Precision Machine owner Drew Pumphrey that he’d have something special in the 2023 PRI booth, and he wasn’t lying. The custom-built “Kingpin” F600, done by Classic Car Studio, needed an engine. For that, they turned to Drew and the guys at D&J Precision Machine for a compound-turbo 6.7L Cummins engine. It’s our Diesel of the Week!