sounds nothing like a honda, my 4.2 had some lump to it when I ran open headers. It would of probably sounded better if I recorded it out side. The mic doesn't pick up any of the revs.
the 4.2 has more displacement and I am using the 4.2 cam, so your's would probably sound different.
I might run open headers on race day at the drag strip, but I wouldn't run it in public. I knew a guy that ran open-headers on his 4x4 dodge with 5.9, sounded like a ****ing monster truck. He couldn't afford all the tickets he kept on getting though. So he straight piped it from the headers back. I think that quieted it down just enough to get the cops off him.