Speaking of builder assistance --

Several 360's have rectangular air filters underneath the aluminum baffling ahead of the left front cylinder.  Whose air filter, what part number, and how exactly did you attach the dang thing to the aluminum?  Is there a set of parts I can buy, or do I have to build the whole thing from scratch, including molding a fiberglass housing?

I have an Airflow Perormance alternate air valve which will accept ram air, but I want the air coming in from the side (when I flip the butterfly valve) to be filtered, and this mounting scheme looks like it would be the best for me.

- Rob Wolf