Ok i tried it and this is the results. Rb block, eddy rpm heads, victor 440 intake, 850 holley with gasket, drop down air cleaner base which is 1 3/8"(drop), 2 1/4" k&n air filter with an x-treme top. All up this gives me about 5/16" of an inch gap between the top of the element and the bottom of the cross brace of the bonnet. Hope this helps.