Please tell me you don't use that air filter on it.
14 X 4 " should be minimum.
I'd even look at a 6" tall element if you have to run a filter.
Were I am pitted its like a sandbox and I have fenderwell headers that kick all that stuff up. I originally bought that to fit the Hemi, but I will have cut the intake down or switch intakes for it to fit the hemi. So, I have not raced the Duster with an air cleaner, but I am changing the hood this year to a forward facing scoop, and that might fit right in the scoop. I am worried about getting crap in there....