Manifold question

Can’t help you on “the rest of the story” but If you didn’t have that intake what would you be using? If that intake was laying on a table with a bunch of other intakes at a swap meet and you needed to buy one, you definitely wouldn’t be picking that one. 318, 302 heads, B-body? Sell it, bolt on that Performer you already have. Seriously, a no brainer.