Factory
Take a look at this Gallery. You won't need to notch your bumpers. I recieved mine very early, and it was quicker for me to add the notches than hassel with getting the correct bumper. Any way ordering the correct part should get you new bumpers if you need them.
Here are the part numbers depending on your VIN.
10395211 Cockpit Wind Break Deflector Aerodynamic wind break deflector w/ SSR Logo (From VIN #1GCES14P74B112074 to current)
15223670 Cockpit Wind Break Deflector Aerodynamic wind break deflector w/ SSR Logo (Prior to VIN #1GCES14P74B112074)
Take a look at this Gallery. You won't need to notch your bumpers. I recieved mine very early, and it was quicker for me to add the notches than hassel with getting the correct bumper. Any way ordering the correct part should get you new bumpers if you need them.
Here are the part numbers depending on your VIN.
10395211 Cockpit Wind Break Deflector Aerodynamic wind break deflector w/ SSR Logo (From VIN #1GCES14P74B112074 to current)
15223670 Cockpit Wind Break Deflector Aerodynamic wind break deflector w/ SSR Logo (Prior to VIN #1GCES14P74B112074)