It sure looks like they cobbed that one. The whole deal was a cobbled mess. If I were you I would buy the correct mounts. Pull the engine and do all the freeze plugs. In the long run you will be a lot happier. Years ago I did and also seen others do what you are doing and in the end wish they were all done the first time. Pull it de-grease it, plug it and paint it. I would even toss a set of valve seals in it.