Originally Posted by my87Z
i dont think i would use a spacer with the air-gap intake but i would use it with the rpm intake, the air-gap already has a higher plenum like the victor but is still a dual plenum intake. i personaly am not a fan of the air-gap intakes i would rather use a performer rpm with the plenum divider notched and a 1" open spacer. if you look up bang suck blow on you tube you will see where they did comparisons of the victor intake, air-gap and rpm, then another comparison of the air-gap and a rpm with a notched plenum divider and 1" spacer.
See my link in the post above.