I built a fresh air intake with inexpensive pieces. Carb hat is a cast aluminum piece from Spectre , I bought after a Google search. Amazon dot com of all places was cheaper with free shipping
Tube is 4 inch aluminum duct work material from Lowes
Air intake in headlight opening. Home type duct work piece with 6 inch opening, reduces down to 4 inches
I hope these images appear, they show on my screen
Tube is 4 inch aluminum duct work material from Lowes

Air intake in headlight opening. Home type duct work piece with 6 inch opening, reduces down to 4 inches

I hope these images appear, they show on my screen