Description:

I am running the same ported drivers side ic horn and used to run the passengers side also but I upgraded to a sprintex. 
I spent a few hours FULLY porting out both horns to take out the sharp down turn and terrible castings flaws as well as massively open them up. I also then sanded down insides down with 120grit to further smooth them out. The passenger side hat I also opened up above the sc inorder for extra flow potential.
if your running a reduction pulley and intake these will absolutely complement them.
200$ obo plus shipping for both horns or i would trade for good condition r56 rear calipers and brackets or a performance upper passenger side engine mount. Paypal is preferred. 
pm or respond to this post. 
stay safe N mod on !!!!!!