check this thread, the 2nd to last post has a link to pictures of the "pancake" air cleaner with a K&N airfilter along with part numbsers:
https://www.stovebolt.com/ubbthreads/ubbthreads.php/ubb/showflat/Main/47533/Number/342731#Post342731

cam


Cam
An amateur expects things to work, and is surprised when they don't; a professional expects things to not work and is surprised when they do."

1954 Chevy 3100 1st Series in the Gallery
More at my Picasa site