Modification Help Wanted

Went to the local cars and coffee event last Saturday and got asked by all the mustang guys if I modified my car yet. So the idea has been placed in my mind. I do not want to void the warranty, met an Aussie with flow master out axleback, is it possible to get axle-back or even cat back without voiding my warranty?
I have a 2013 mustang GT.
Any other mods out there y'all would recommend?
 
Lighting upgrades!

trunk.webp


Plus it's very affordable

Nick C.
 
We have replacement LED's for every location, footwell LED kits, Angel eye kits, Multicolor bulbs that change colors with a remote or your phone, (*underglow...eh*)...HID conversions. All kinds of fun stuff and normal stuff

Nick C.


*I don't push the underglow kits hard, but ours are the brightest* lol