I'm not familiar with your layout or dimensional limitations so forgive
me if this idea I'm throwing out bounces straight into the trash bin.

What about a low profile flat panel filter like what the RX-8 and most
newer cars use?  You can have the open airhorns inside a sealed box with
the panel in the cover and the inlet duct feeding into it.  The filter
panel in the RX-8 is approx. 8" W x 15" L x 1" Thick.  It would take
some fab work though as the panel would need to be secured against a
sealing flange around the box opening for it.  A K&N flat panel for the
RX-8 is approx.$45 from Summit Racing, but K&N sells universal versions
too if you require different dimensions to make it work.

Mark Sipe

Yes I can make anything work. With the flat panel filter you need room at the top
and bottom so it is a bit thicker than two cone filters side by
side 3" OD and 7 inches long. With the scoop on the top of the cowl
the air needs to make a right angle. Moving the scoop over to
the cool side of the cowl means a long hose which is a pressure loss in and of
itself. Especially if it is corrugated.

On the Mustang II we are trying to make the cowl look like a real Mustang.
Or at least I think that is what Mark wants. He has sent
me no sketchs yet so I am not sure. Here is my best guess so far
using a 14 inch diameter spinner. I think he wants to make his own
cowl.

What I really need are dimensions of different filters.

Paul Lamar ...No rotor no motor.

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