Bumper and brake cooling ducts

[Cochise]

I want to add some brake cooling to my car. One of my winter projects now that HPDE season is mostly complete.

Here are my options;
- Cut my GT bumper for the duct work
- Replace the bumper cover with a Cobra bumper cover where I can use the existing inlets on the bumper.

Downside to Cobra bumper, extra cost for bumper and paint matching. Upside is not cutting and an OEM look.

If Cobra bumper is the best route, who is a reputable source for a Cobra Bumper? LMR? CJP? Thanks!