In looking at reference photos on line I see two different approaches. Some look like the Max Wedge just cutting out the X brace in the center. Others cut the front like a Max Wedge and cut out the center of the rear cross brace. I looked at the Mosher Mopars site and he has cars both ways. Question is on a 64 Ply is the removal of the center of the rear brace needed to clear velocity stacks? I know the 65 Dodge I did, didn't need the rear cut out. Any advise from those with a 64 A990 clone? sCroll down to the hood pix.
http://moparsbymosher.com/projects/kens64/kens64.htm
64 Ply
http://moparsbymosher.com/projects/wrights64/wrights64.htm