Joe Rati from Rati’s Rides did a comparison video at my dealership. It’s not posted yet, but should be up any day. The 350R was louder with more rasp.
Typically you would have to have a tune if you remove the catalytic converter with the race pipes. You're safe with the resonator delete, but i wouldn't trust the dealer to honor any engine warranty with the cats removed.
Since I have to wait until late Q3-Q4, I might cancel my iconic silver 2020 order for a 2021 in fighter jet gray.
*im hoping they will change the color of the recaro seats too.