This is my advice, get the ATAK if you’re only getting an axle back or Cat back and you’re not getting headers. If you have an automatic then just get the axle back because of the sound the AFM system makes kicking on and off and on and off and on and off.
I have a Borla S with headers and it sounds perfect. If I just had the S Cat backs it wouldn’t be enough. You can’t lose with Borla, which one are you getting?