So I'm pretty sure I'm gonna be taking a crack at making my own aluminum air box. My idea is that the tubular frame that's open under the gas tank could be made into a ram air tube by cutting a hole through the plate behind where the radiator mounts along the interior diameter of the tube then bracing that hole with a x brace or cross brace for rigidity. This would allow for air to flow better less restricted into the frame tubing and into the air box. If I'm over thinking this please let me know, a lot of you guys are more technically minded toward this sort of thing than I am. Also I'm curious if this is a good idea would it be wise to patch the existing hole in the frame tube or leave it open?

the other issue i see is that if you are riding behind someone you will suck in a lot of dirt but that depends on what you are riding on.
ram air set ups also pressurize the air box at speed so the air box would have to be sealed.
if you want to give it a shot i would say do it, i doubt many have tried this set up so you dont truly know if it works or not.

If it is to be of any benefit, you'd need a pressure carburetor too.