CURVED 52" LED LIGHT BAR

[Eliot]

    Hello everyone,

   I would like to ask for advices on the following modification I want to make:

   I have a 2017 Silverado WT, so the bumber does not have any type of lights and would like to make a large cut to fit a curved 52" led light bar, I am planing to attach (Weld) a metallic mesh (Grill) as protection, but would like to read from you what can be the proper way or most clean way to make a clean cut on the bumper?

  I am not by any mean a metal expert nor I have the tool to make the cut, but before take it to a chop would like to hear ideas from all of you!!!

  Thanks!!!!