I would not buy this product at this time
Overall this is a great looking manifold. Unfortunately, the machining where the manifold mates to the heads is poor. I had gaps large enough that there was no way the intake gasket would seal. I contacted Speedway and they paid to ship it back and sent another shipping paid. It fit poorly as well. The machined surfaces on the manifold were not flat to a straightedge. The Edelbrock Performer previously on the engine fit fine. I called Edelbrock, spoke to someone, and sent pictures and an explanation of the issue in an email. 2-1/2 weeks later - no real response. I finally contacted Speedway again and they paid to ship the 2nd Edelbrock manifold back, and sent me a freight-expedited Offenhauser 3-carb intake (I paid the difference in cost) that fit perfect. Overall, a big hassle, HOWEVER, Speedway went above and beyond to try to resolve this. Hats off to them for outstanding customer service!