"Only motor with a history of problem" sounds a bit out of context, or the author is a lunatic. Was he referring to a particular chassis or era? The 3.0 liter 104 has all sorts of problems - including head gaskets, premature valve jobs (mine at 40k), weak, expensive and virtually irreplaceable igntion control modules - just to name a few. Not a great engines all thing considered. That same magazine has referred to it as a cob job rushed to market and then fixed with the 3.2.