This is what I am going to try on my ss 1le. Summit Racing® Exhaust Insert Cones SUM-629020.
I bought two of these but yet to install in the exhaust tips themselves. Once the three sided flange is cut off the cones they will go in the tips far enough to not be too visible and just a little spot weld to hold them in place(easily removed if wanted)
Like is said. I have not installed mine yet and plan on doing the non-valve side first?
The cone will clear the valve and allow it to operate.