I did the mod today and installed a K&N drop in air filter. Thanks for the initial post and photos!! I used a sharp blade to cut the carbon filter out and then I used wide blue painters tape to seal off the mass air meter. I followed with a rough file and then a dremel to smooth over the surface.
Easy mod and my initial 2 mile test loop brought with it a feel of improved throttle response and "grunt." Glad I did it and I will look forward to testing it out with a few more miles!