Which application is your intake? I didn't see one for the Zilla on their site
YFZ 450 I was told it's the only one that will fit with our shock placement. I also have a YFZ with the same intake so I made sure it would work before the purchase. Only modification is the FCI bracket(wasnt hard though) Allen Knowles is the one who gave me the idea and said it's probably the best way to go.