The first one is from a Eunos 800 or Millenia, they're the same thing. It's very effective and is the same as the KLZE manifold, though, it'll fit under an MX-3 hoodline.<p>The second is a true KLZE intake manifold. Square runners and everything, but it won't fit underneath a MX-3 hood because that long neck to the throttle body would hit the master cylinder.