The Intake was an original Weiand #7503 (single four). Mine was (I believe) one of their early prototypes or at best an early production manifold. I say this because the casting was/is minus any of the Weiand logos that they used on the production manifolds. The surface finish is also not quite the same. There is a 7503 number hand stamped into the underside of the runners. The flanges are also a different thickness. All in all it was not in the greatest shape but it was perfect for modifying to accept the Magnuson which I did. I picked up the Magnuson 10-12 years ago off of Craigslist and it was still in the shipping box / bag.