I am using this setup for a hood sealed cold air intake... https://moparconnectionmagazine.com...ld-your-own-air-grabber-with-kn-filters/

I think I have under 275 in the setup, using a Summit discount. I bought the "seal" on Amazon, but you only need about 5' (compared to the link in the article).
Summit items: K&N X-Stream Airflow Top Plates 66-1401, Allstar Performance Aluminum Air Cleaners ALL25923, Allstar Performance Universal Plastic Air Pans ALL26104