Ringbrothers unveiled their 1246 horsepower Invadr at the 2024 SEMA show and it’s insane. Invadr, a 1987 Buick Regal Grand National sporting a 1,246-horsepower 3.8-liter twin-turbo V-6, a custom chassis, and cosmetic upgrades that take enhance the original's subtle good looks. Yes, that's 1,001 more hp than the 1987 original. The engine comes from Duttweiler Performance, a longtime California builder of ultra-high-horsepower engines, including monster Buick V-6s. In its current state, this engine produces 1,246 hp and 1,000 pound-feet of torque running 32 psi of boost, but Ringbrothers says that if you turn the turbos up to 50 psi, the V-6 is good for 2,000 horsepower.