Once you turn off the active sound (fake engine noise crap) the stock stereo sounds just fine. I'm not an audiophile but certainly love clean, loud music with no distortion, and once I performed that mod, the stereo truly came alive.
Sweet! I found a solution for $49- in aluminum too! I spoke to the guy and they are shipping now!
https://www.ultimaraceworks.com/product-page/anti-buffeting-air-deflectors