L6 with headers heat to carb

[old51sedan]

Looking for some information on installing heat to the carb on my truck using an Offenhauser intake and cast iron headers. I have purchased a plate from Offenhauser to bolt to the bottom of intake below the carb, it came with brass fittings to a water hose on. I'm sure a few of you folks have used this method, was looking for pro's and con's of doing this, also hopefully pictures of how you routed the hoses and how you tapped into the heater hoses. Has anyone had a problem with leakage, I was planning on making a gasket, I doubt if you can buy one. Appreciate any help you can offer.