From the research I have done they were used for roundy pund racing in classes that mandated iron intakes... It wasn't uncommon to port W2s squaure. Dick Landy did it to the extreme in Pro Stock.
It is also said that chrysler intended to use them on Little Red Expresses and did install them on certain pursuit packages in the late 70s to early 80s 360s.
Of course this will create an uproar from some .
I bought this as a novelty.
