I just heard these heads aren't smog legal on mustangs, something about not having egr ports. What do I have to do to make these smog legal on my mustang?
i've read there are people who don't even have smog equipment hooked up and pass with flying colors, so maybe just make it look like they're hooked up somehow. I think it costs a lot to have those ports drilled - like almost to make a head swap a good idea.