Just thought I'd throw this out there, if case anybody else had done the 6637 intake mod on their 7.3. I have been looking for a pre filter or filter wrap like the k&n ones for the 6673 filter but only found one for $30. Seemed a little high to me since that's all I paid for the filter. Anyways I sent this guy a message on ebay because he had a bunch of filterwears listed and he got back to me quickly and it was only $20 shipped. Couple color options too.
http://m.ebay.com/itm/251477182291?nav=SEARCH




http://m.ebay.com/itm/251477182291?nav=SEARCH
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