While doing some web surfing, I found a service offered on the Grimmspeed web page for porting/polishing/coating the manifolds for our SVX;
http://www.grimmspeed.com/categories...rting-coating/. As an old school believer, this was a method of gaining better flow/heat control and hopefully more torque/horsepower. I don't know if it will provide performance gains on our engines but just wanted to let people know that it's available. The coating, for sure, will upgrade visual performance in the engine bay.