We've seen the diminutive Mazda MX-5 Miata swallow ... "MADBUL" RX-7 and its twin-turbocharged, three-rotor 20B engine, his new ride is an NC-series Miata with four rotors and twin Garrett ...

However, one of the craziest builds spotted was by a small company called Hot Parts USA, and it showcased a first-gen Mazda ...

Mazda's individual ratios are geared higher, as the naturally aspirated mill has a larger rev range. Fiat's 1.4-liter turbo-four cuts off at 6,250 rpm, while the Miata's 2.0-liter will spin to 6,800.