[rdorman]

Check the thread in tech tips. There is a variety of setups, flow rates, etc there. The xtreem lid is 9" where the stellings is a smaller diameter.

What I am going to is a stack of filters on my single four with the stellings air cleaner assembly (I have the hood clearence to do so). Remove the second filter for show. Mr. Gasket make an el-cheapo 9" air cleaner assembly that looks a fair amount like the stellings. The filter selection in 9" is almost unlimited.

Rick