I get the brake squeek every now and again even with the stockers, from what I’ve read it’s normal with performance brakes.
I love my weighted shift knob but I miss the size of the OEM knob. I also found that doing the Redline cocktail (2 Quarts MTL-85 and 1 quart MT-90) helps with the 2nd and 3rd grind issue. Under console and under hood bushings as well as a short shifter make it even better from what I’ve read so those are next for me.