Holley LS Hi-Ram EFI Manifold - 300-123 exhaust-cutouts 1x Brass Union for Lines

1x Brass Union for Lines A + B

Satin Black Finish (For Natural Cast Finish see Part Number 21-152)

This upgrade is customers who have purchased this system and would like to replace the center muffler with our straight pipe assembly

Exhaust Tip Cut: Angle

the universal APR Catch Can System Block Off Plate is designed for use on vehicles where APR does not sell an application specific Catch Can System

Holley LS Hi-Ram EFI Manifold - 300-123 exhaust-cutouts 1x Brass Union for LinesOverview: The Holley GM LS1 LS2 LS6 Modular Hi Ram Intake Manifold is introduced as a cost effective alternative to fabricated sheet metal for high performance applications where induction system height is not limited. Coupling this Hi Ram intake with the high flowing LS1 LS2 LS6 style cylinder heads has outstanding potential for N A and forced induction applications at a budget minded cost. Aggressive, bold, race bred styling will make bad intentions