This is not exactly an answer to your post, but there is a good pic of the parts at this link:
Diesel Power Products | FA-1759 | AIS Severe Duty Intake System 98.5-03 7.3L Powerstroke
I am considering the AIS, and wondered if anyone has "skeletonized" the airbox to allow for greater airflow...the box and snorkle seem to be the greatest restriction. I know they offer a foam sleeve to connect to the fender cutout, then drill the box to accept it. Seems like an ok compromise, but I am still wondering if anyone has that level of filtration with a free flowing airbox setup. Maybe the fender sleeve doodad with the snorkle and zoodad is the answer,
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