Ok, would you care to name ANY other engine on the Taurus that has had headgasket problems? The headgasket problems on the Windstar were on the 3.8L. The Windstar continued to use that engine through its production run. The Taurus stopped in 1994, and (surprise!) the rate of headgasket failure on that vehicle absolutely plummeted. I challenge you to find any data proving any significant rate of failure on any Taurus after the 95 model year
Take the following data for example:
1992-1995 Taurus reliability data1996-2004 Taurus reliability data
Note that they have the headgasket failure limited to the 3.8L. And that by the 96 MY, failures disappeared.
Also note that by the 96 MY, transmission failure had disappeared as a significant problem. Why? There were two design faults - an oil passage and a clutch piston. By the middle of the 95 MY, those problems were fixed. Also note that shortly afterwards was when Honda started having transmission meltdowns. But we don't dare criticize them for that, do we?
The facts are that you are using reliability data that is seriously outdated.