72-73 340 air cleaner (flaper door)

Hey guys gonna start cleanen out the shed & ill never use this, its a early 70's 340 air cleaner that ive repainted years ago & havnt got a new 340 4bbl sticker for it yet. It has the air flapper door that opens up when manafold vac goes down (under load) it doesnt leak & holds vac good. first $100 bucks takes it (plus shipping).