Has any one else use Por-15 Fire Seal 2000?

Ok I am not new to cl***ic cars but I do have a new to me '64 Coupe Deville. I noticed I had an exhaust leak on the p***enger side manifold (very common on these from what I hear). I noticed 2 cracks in the manifold. I was looking to replace the manifold but I ran across this Fire Seal 2000. I know Por-15 was great for frames so I figured for $20.00 lets try it before spend a few hundred. This stuff worked bada$$. IT is even made for cast iron. Best thing is I did not have to remove the manifold

I by no means work for POR-15 or have ever used any of there products but I just might from now on. Now lets just see how long this holds up.

Has anyone else used this stuff?

 

At least there's no JB Weld involved here. That sounds like some good stuff.