Project Miata Streetfighter: Vol 3 "Getting our Head straight"
Amazon.com: Remanufactured Mazda Miata Protege 323 1.8 Cylinder Head ZERO MILES Cast# BP05 91-97 (CORE RETURN REQUIRED) : Automotive
1.6L Miata Head Flange – UPP Turbo
Custom designed for the Miata. – Flyin' Miata
Flow Testing and Machining Spec Miata Cylinder Heads - NASA Speed News Magazine
Head Case - The NASA rulebook on Spec Miata cylinder head modifications is clear and concise, and here's what the rules look like in the metal - NASA Speed News Magazine