Is this what you're looking for Tim?
http://www.pbase.com/dennygraham/fuel__air_filtering
Only problem is it sits the top cover a little to high to put
the nut/clip on so you have to work out a way of extending
the center stud.
In my case, I just took a piece of hex stock and machined
a female to male adapter:
http://www.pbase.com/dennygraham/image/155117926

dg

Denny G
Sandwich, IL