I found another leak today - the red rtv sealant I used as gasket material for the front and rear section of my weiand dbl bbl intake didn't do the job ... Or more likely I didn't do the job correctly. I also think the little npt plug in that hole under the thermostat is where the coolant is leaking out. Can someone point me at a website or book that illustrates the proper methods for sealing an intake manifold? I also wonder if I need any rtv on any of the intake manifold bolts. Brian