Sorry to not be more specific in my title, not sure how to reference the second intake manifold. New to Hondas, so I am probably asking a terribly mundane question.

Replacing the motor in 89, currently stock A6, with a ZC SOHC motor. I have the stock intake, fuel rail, etc that I can swap over to the new motor. But the new motor has an intake as well.

Being that the goal, for the moment is to be as stock as possible, any benefit (breathes better, etc?) to using this intake? It is the manifold that came with the new(er) motor -





You can also see it came with a wiring harness. I would like to use my harness, as this was converted to MPFI, and mine is the stock SI harness. I do know that the sensor on the firewall is now on this intake, and I may need to lengthen the wires if I choose to use the newer intake.

Thanks in advance