I am currently working on the following Rolls Royce Phantom II, but I have no good idea how to add the side vent holes. Maybe you have some good ideas, that could help a lot. The problem is that i thought about just making an array of hole shapes and use the boolean operater, but at the actual vent the metal peaks out a bit. I have no idea how to get that in a not to complicated way.
My mcurrent model:
This is how I think an individual vent hole should look like: