SCAG Cheetah II™ 8A41 61" Mower with Velocity Plus™ Cutting Deck and Briggs Vanguard Big Block EFI Engine 37 HP. In your world, it pays to become more swift, agile and powerful. Make it a reality with the quick and precise Cheetah II™, a machine that devours jobs at a pace you’ve only dreamed of while delivering an unmatched quality-of-cut and incredibly smooth ride. With the Cheetah II, you’ll never be caught from behind.