+1 for the separate air cleaners, but I totally understand the long oval one, too.

When I first built my T-bucket, I had the Stellings and Hellings style helmet style air cleaners. Not only were they only 4" elements, but the helmet cover only had about 3/16" opening around the base for air. They looked great, but I might as well have stuck a sock in the carb. I wound up changing them out to some Obrien Truckers cleaners with an open element.