Loud Whisper

What It Is: Brodix cylinder heads for small-block Chevys

Why You Care: If you want cylinder heads, you can choose 64cc or 67cc combustion chambers, 180cc or 200cc intake runners, straight or angled plugs, and center-bolt or perimeter-bolt valve covers. On top of that, the heads are CNC-machined, have unleaded-friendly iron valve seats, and the ends are drilled and tapped for car accessories and auto parts.

How Much: around $1,300