Thanks for the props on the book, Dave, and welcome to the forum. I went digging around in my manifold collection tonight but I don't have one of the intakes you are referring to. This is a cast iron intake, correct? Do you happen to have a picture of one? I could probably tell something from a picture by the shape of the runners, and comparing it to the runners of the other cast iron intakes I've tested. Also, does it have the low riser port sizes, or do you know?
Sorry I can't be of more help on this one; if you can get a couple of photos I'd be happy to weigh in...