I found this older article from Hod Rod on some "performance" intakes. It seems the Edelbrock slingshot performs very well.
https://www.hotrod.com/articles/hrdp...old-smackdown/
That pic of the one from Brian, I think I have seen before, or at least some similar. From Monteray Speed Shop. If I had money, I would get one of the two in the link below...
http://www.montereyspeedandsport.com/catalog/