Air filter capacity

[Lin]

It was mentioned in another thread that our beloved 8v71 should have an air filter with around 1100 cfm capacity.  I checked and found that the Napa Gold 2966 I am using is rated for 970 cfm.  I have tried finding the ratings for other manufacturer's filters online but have come up empty.  Does anyone know which company would make a higher capacity filter in the same size?

I noticed that Donaldson, for example, has three numbers that cross reference to this one (p181007, P182007, and EAF5007), but I could not find the cfm rating on any of them.

[eagle19952]

snoop here:

http://www.maesco.com/products/racor/r_ecoseries_intro/r_ecoseries_eco-sm/r_ecoseries_eco-sm.html