There was a post about it either here or on FBBO or both. Yes the link you provided is the correct stuff. I know a guy that used it on his manifolds and it held up about a year that I know of so far. I also just applied it to mine after having them blasted. It is simple to use just spray a few light coats and after a good dry time just wipe the part down with a clean rag and the part will look like clean fresh metal. I haven't started my engine yet but plan to this week. Hopefully with breaking in the cam and the paint burning off on top of it all will workout.
I also just did the procedure to my master cylinder that just came back from White Post, I had then send it back after rebuild in bare metal.
Hope this helps
Ron