The other option is to simply add another exhaust outlet from the stock exhaust manifold. Otherwise you will need to make a plate for the stock intake like this:
http://www.langdonsstovebolt.com/store/#!/Heat-Plate-for-235-261-Inlet-Manifold/p/1222049/category=18665950
Then you run copper lines from the fentons and use exhaust heat. Or in the alternative, run hot water.
