What happens when you combine an H1 Hummer with a turbocharged 6.7L, 1,500-horsepower Cummins engine? You get what Mountain Machine owner Steve Ortner calls one badass machine. Ortner’s Cummins swap is everything he dreamed it would be and more.

What happens when you combine an H1 Hummer with a turbocharged 6.7L, 1,500-horsepower Cummins engine? You get what Mountain Machine owner Steve Ortner calls one badass machine. Ortner’s Cummins swap is everything he dreamed it would be and more.