Beyea Dirt Late Model Tri-Y Header Triple Step1 3/4 x 1 7/8 x 2 x 35 (360-420 cu in) Customize your power curve with Beyea Dirt Late Model headers for a broader range of power. Their passion for header fabrication starts with quality steel for long-lasting durability and performance. Plus, Beyea's flanges are laser-cut to ensure good support and seal. If you want more from your race engine, choose Beyea Dirt Late Model headers for a performance boost!