Is this for the Optra? For the intake head, whatever fits, fits. If it's an HKS, APEXi or a K&N, mcuh better. Actually, most of those are good, though I'm not sure if the new Simotas are better than the old ones at filtering.

As for the "cold air" part, I don't know if anyone's selling the tubing for your car. Baka DIY ka nalang dito.