* 1.8 L DOHC I4 (BP-4W): This engine was introduced in the second-generation Mazda Miata (NB). It produces 131 horsepower and 116 lb-ft of torque.
* 2.0 L DOHC I4 (MZR/L3-VE): This engine was introduced in the third-generation Mazda Miata (NC). It produces 165 horsepower and 140 lb-ft of torque.
* 2.5 L DOHC I4 (L5-VE): This engine is found in the current-generation Mazda Miata (ND). It produces 181 horsepower and 152 lb-ft of torque.
* Other engine swaps: While the above engines are the most common choices for Miata swaps, various other engines can be installed, such as the Ford EcoBoost 2.3 L I4, the Honda K-series I4, or the V8 (GM's LSX series or Ford's Mod
