bgblue,
Take the time to read the title of the piece and see if you can find anything about heating manifolds in there. Plus, heating manifolds is a figment of Tom Langdon's imagination. The headers, or stock exhaust, and the head provide more heat than the water to the manifold long before the thermostat opens anyway. If you want stock heat, like the factory puts on them because they don't have a clue as to where the units are going, stick with the stock setup and you won't have the hassle of doing it yourself.
