.Map :: MoHAA Mapping

I'm working on a level similar to "Riding out the Storm" from MOH Frontline and wanted to make an armored train gun that shoots at the player. I made the turret out of brushes and made it a script_object. Is there any way I can get the turret to point at the player and follow him around just like the turret on a tank? Also, I was looking at the Nebelwerfer tutorial and figured something like that could be applied to my turret. Is there a way that I can spawn a tank projectile at the end of my turret and have it fly towards the player? Any help would be apreciated.

Maybe you've have to make your own model for this, or use something like turning.....i don't know how. And the tank projectile, maybe you could just play a sound of the tank cannon instead of the nebelwerfer sound.