Welding up a M-1 W-5 for std head?

The large port is a race intake. The small port like you and I have are more for the street, kind of, if ya know what i mean. By compare that is. It's designed to move large amounts of air and fuel. It also came with a 4500 carb pad.

Side note;
Early W5 intakes had to be cut and welded to fit.