[JBX66]

As it turns out, it's got an electronic sensor. Thanks for the input though. We fired it up today. It leaks transmission fluid, so badly that if someone stole it we'd be able to find it in about 20 minutes. But it doesn't have any exhaust pipes or mufflers, just the manifolds. Dang near blew my ears out. We only ran it for five minutes, at most. Couldn't hear a blamed thing for the next ten.