I miss the days of the old las cannon twin linked plasma gun turret. The most common fix for the lack of a turret is gluing to plasma guns to a rhino bolter turret and sticking it on top of the tank. There is nothing wrong with that, but it doesn't seem real razor backy to me.
So I took a predator turret did some cutting and added some plasticard, green stuff, and a few plasma guns. I think it turned out pretty solid.