Wich gen exhaust/turbo manifold do I have?

[4g63tcrazy]

On a 2g manifold the holes for the bolts will be flush with the runners since the manifold has more curve to it and the holes on the 1g manifold will stick up a bit since the 1g is more of a flat design. Also the 2 most outer holes will be bigger on the 2g mani.