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I've seen some use just plastic flex hose and some clamps, to run from the front end of the car to the end of the intake.
Might have to play around with location of the forward intake - not everything in the front is exposed to a clean source of air - there are "pockets" of high pressure air that can beneficial to the ram air modification.
But don't get worked too much into - has been shown on many occasions, both aftermarket and OEM executions - that "ram" air is more about marketing then performance.
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2002 Corolla S, 1.8L 1ZZ-FE VVT-i
2003 Matrix XRS, 1.8L 2ZZ-GE, VVTL-i (RIP)
2009 Matrix XRS, 2.4L 2AZ-FE VVT-i
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