Can someone please school me on 340 air cleaner

You still seem new to mopars. Thats fine. We were all new once. I need a 340 Air cleaner for My dads 70 340 swinger but im not ready to spend that coin that. Im using a 68-69 Air cleaner. Still a very nice, Hi performance piece and it looks period correct. They did come on 340s so it, technically is still original. And You mite only spend 1/4 of the price for one over a 70-71 Air cleaner