I?m swapping in some brand new Barr manifolds on my 350 this winter but they?re configured a little different than the old manifold. The old one had a hose barb-like fitting cast into the manifold that the water inlet hose attached to. The new one has a 1/2? threaded hole on both ends. In one end goes the plug in the attached photo, in the other, I presume I need a 1/2? male thread x 1? hose barb brass fitting to make it all work ( inlet water hose is 1?). I?m finding this difficult to source. Best I could find was a 3/4? male thread to 1? hose barb. I suppose I could put in a 3/4? x 1/2? reducer but now we?re talking like $20 just in fittings. Also, does brass need Teflon tape when threaded into cast iron?