Air cleaner ideas?

Back in 1974 during the big tornado outbreak there was a 71 340 duster that got blew into the woods on a farm near me. The owner sold the motor and trans out of it and later gave me what was left of it, I got the air cleaner and ralley dash out of it. I let a friend talk me out of the air cleaner a few years ago, I sure wish I'd kept it at the time I only had B bodies and didn't need it, but ya'll know how things go. :(