I got one at local parts place 4 Seasons brand, I believe. Heavy cast iron. Last forever. It will rust, so durable exterior coating of your choice before install. Also a gasket with stickum on one side, nothing on the (manifold side) other. Clean the manifold good, inspect for scratches, nicks, etc., install. Mines been off/on several times since, no leaks. Just remove the screws and give it a little tap and slide it off. No need to disturb hose. Set it aside.
More info than you needed. works for me. My $0.02 don't overtighten or unevenly.http://www.amazon.com/Four-Seasons-84830-Water-Outlet/dp/B000CNMZ2G/sr=1-3/qid=1157148629/ref=sr_1_3/002-4573578-6402439?ie=UTF8&m=ADG953YR6NRBF&s=automotive