Have you upgraded to the seperate intake tract crossflow head? Would you like to stay with the reliable and simple SU's? The current offering for SU manifold do not flow very well. In fact much of the benefit of the crossflow upgrade is lost due to poor intake manifolding.

• Complete blending of tube to flange unions
• CNC laser or milled flanges
• Polished outside to reject heat to keep intake charge cooler
• Course grit inside finish to promote fuel suspension
• Idle Balance included with throttle cable bracket