hey guy I have two motor's sitting here a B16a (SIR) and a B16a2 (99 civic si). I'm wondering if the intake manifold are interchangeable and what else can I swap from the two engine's. The B16a2 is has everything but is a OBD2 and the SIR motor only came with ECU and the motor itself wit no engine harness. I'm thinking to swap the intake manifold and the AC anyone no's if that's possible? Waiting to be swap into a 90 civic si............... thnaks guys