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Discussion Starter #1
So I saw this 2.5i long runner intake manifold still Installed on a Impreza in the junkyard so I snagged it for 30 bucks and I was wondering what kind of fuel rails would fit them? For example would torque solution or IAG fuel rails fit on the manifold?
 

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Assuming this is a manifold from an SOHC Impreza 2.5i, the manifold will utilize OEM fitment top-mounted injector rails.

The manifold is a relatively good choice, as I understand, with significantly improved plenum volume and higher-flow runners compared to the Turbo Subaru manifolds.

Hopefully you have associated top-end work done else this will inevitably be an endeavor in futility.
 

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Discussion Starter #3
My apologies for not making my question more clear. So I currently have an 06 WRX and yes I found the long runner intake manifold from a 2.5i SOHC (should’ve mentioned, sorry) my question was if I can utilize aftermarket fuel rails on this manifold.
Thanks in advance!

Assuming this is a manifold from an SOHC Impreza 2.5i, the manifold will utilize OEM fitment top-mounted injector rails.

The manifold is a relatively good choice, as I understand, with significantly improved plenum volume and higher-flow runners compared to the Turbo Subaru manifolds.

Hopefully you have associated top-end work done else this will inevitably be an endeavor in futility.
 

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Right, so my answer stands. If the rails are OEM fitment for your car, they should also fit that manifold.

That said, you might consider utilizing your stock rails in a parallel arrangement. It was a "mod" that was popular a decade or more ago: converting to parallel... more evenly distributes fuel pressure within the rails.

Aftermarket rails are hardly an upgrade until you are in really serious territory (multi-stage injection, closed fuel cell, surge pumps etc.)
 
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