Darren,
From what company are you considering buying the Fentons? That company will most likely have a kit for connecting to (heating) the intake manifold. If you cannot find examples of kits, ask for us to post links.
There are various styles of kits and methods of providing heat to the bottom of the intake manifold - a necessity for smooth acceleration. Some styles use cooling system water and other styles use exhaust air). The method that people use is a little like choosing a religion.
I have used circulating heated water from the cooling system (this requires more complicated plumbing) but have changed to exhaust air delivered through the plugged hole on the outward side of each Fenton header (no worry about water leaks or water line breaks).
Jim Carter Chevs of the 40s Langdon's (fittings are for water hoses)
