Sixpack on a 318 engine ?

Back when mopar did the last 6pack repop for restoration parts I thought the price was stupid, I can’t exactly remember what what it was, but I thought it was way too much. Oh boy was I wrong, I should have bought a dozen of them.
At one time I had just sitting around sets for a 440, 383 & 340.

Now all I have is a new intake I bought for a 440, and a Mr. Norms air cleaner.