The Screamin' Eagle Stage I Air Cleaner Kit (P/N 29260-08) looks like it comes with everything you need. But then I found P/N 29624-08, the SE Chrome Backplate. When you switch to the SE air cleaner, is the backplate more visible? Can't think of any other reason to shell out $50 for a chrome backplate.
Screamin' Eagle Stage I Air Cleaner Kit - Twin Cam Models | Harley-Davidson USA
Screamin' Eagle Air Cleaner Backplate Kit | Harley-Davidson USA
Screamin' Eagle Stage I Air Cleaner Kit - Twin Cam Models | Harley-Davidson USA
Screamin' Eagle Air Cleaner Backplate Kit | Harley-Davidson USA