...My second suggestion was to 'Tap' into the rusted piece, itself! Before you can cut threads; the tubing will just spin out! Soaking it overnight in WD-40 is the key. There are NO freeze plugs behind the Bellhousing, only a Cam Plug and one or two screw-in plugs(oil). This kind of rusting could have been prevented or slowed by the use of Preston Anti freeze/boil. It carries a rust inhibitor...
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