I have an extra e88 intake manifold that has two broken water jacket plugs. It came off of an old parts car - I was going to sell it on EBay but not in that condition. The plugs look like mini-freeze plugs and are on the underside directly beneath the carb (the front one in this case). Anybody know where I can get replacements? thank you in advance...

You can get the correct size freeze plugs at any auto parts store.