cutting painted panel

[tumper93]

Anyone have advice on how to cut on a painted panel? I am looking at installing Anvil hood vents on my painted hood. Three of the sides are hidden by the vent but the rear cut goes over top of the vent and the vent tucks under the hood there to hold it down. This edge will need to be have the paint unburnt etc. I have air saws, grinders, cutoff tools, etc just need some advice on the best way to handle this.