I keep reading everywhere that straight plugs are better than angled plugs, due to the plug boot melting, etc. But to the naked eye, it looks like angled would be better because the spark plugs are angled to the opening between and away from the header pipes. So what am I missing here, and what is so bad about them? I'm planning on a ZZ4 crate motor, but the angled plug thing is scaring me. Why so many header issues. Are the boots hitting the flange?