LT1 Cylinder Head to LS1 Cathedral Intake Adapter. Compatible with (intake manifold) engine RPO codes: LS1 LS2 LS6 LY2 L20 LH6 LY5 LMG LC9 LS4 LH8 LM7 LR4 LQ4 LS6 L59 LQ9 LM4 L33. Adapts Gen V LT square port heads to LS Gen III cathedral port car or truck intake manifold.
