Here are some photos of my air cleaner mod.  It is an after market HD
unit, but I am looking for a round one (without Harley on it) to
replace it. Cut the hole out to make it fit the existing hose
from the filter to the plenium, and make a metal bracket to bolt it to
the frame where the old pod came off of.
I had to open up the hole in the back plate to make the
original air tube fit.  I had to go up 2 sizes on the main jets to
accommodate the extra air flow.

Al Hatten
707-254-8326 - H
Napa,CA - Wine Country