Offenhauser small block 4 barrel intake 66 and up

After all the questions I became skeptical. I laid this intake on a 360 I have. It matches up. Must be part number 5700. It was mislabeled when I got it. This is for a 66 and newer small block.
Try threading a 3/8 bolt in the end while on the 360 and shoot a pic of the angle from there.