Engine Cylinder Head NA Miata The amount of shim stack

The amount of shim stack preload

This system uses the Super 50 series muffler for a moderate to mild sound level and increased performance

Uses rear upper seat belt mounts

You Can Be Assured Of Top Notch Accuracy And Durability Thanks To Autometers Patented Air Core Meter Movement

The 2251 is suitable for street

Engine Cylinder Head NA Miata The amount of shim stackThe Edelbrock #5025 E Street cylinder heads are designed for Ford 289 351 W V8 applications. The Edelbrock E Street cylinder heads offer American made quality and affordable performance. E Street cylinder heads feature as cast ports and are designed for entry level street performance applications operating in the idle to 5500 rpm range. The modern combustion chamber designs improve the combustion process and larger than stock intake and exhaust ports