The Tech Tip that Marc submitted is a GREAT one! I followed his instructions, but made a couple slight changes because I didn't have the foam that he used. I used the same model oil bath air cleaner that Marc used in the Tech Tip.
I cut out all of the insides of the top instead of leaving the upper star and the inner cylinder. Easy to do with tin snips, then grind down the nubs with a die grinder.
I cut 1 1/8" off the bottom edge of the top with an angle grinder. This allows more air flow (increased to about 2 1/8" from 1"), but leaves enough metal on the sides of top so that the dry air cleaner is not exposed to retain a stock look. This step also eliminates the roughly 1/2" lip on the inside bottom edge of the top to allow the air filter to fit inside.
I used a K&N E-9216 filter. It is a little taller (4.449") than the one Marc used. It fits perfectly into the modified top and seals against the top and the bottom, so no need for foam. When assembled, it looks completely stock.http://s844.photobucket.com/user/ma...1998_zps9azd4n9e.jpg.html?sort=3&o=1http://s844.photobucket.com/user/ma...1999_zpsecs1pxjq.jpg.html?sort=3&o=0http://s844.photobucket.com/user/ma...2002_zpsdqh22svz.jpg.html?sort=3&o=1http://s844.photobucket.com/user/ma...2003_zpscnfeltoz.jpg.html?sort=3&o=0
A big THANKS to Marc for the Tech Tip,