I think they redesigned the 3.8 gaskets also. They used to be that black plastic junk with rubber seals, now on some models it's a metal plate with rubber seals. There is also a service bulletin on the 3.8's for upper and lower manifold replacement. The EGR tube that connects between the 2 intakes was melting the material of the upper manifold causing coolant leaks. So they tell you to replace both peices.
Here's a page on the recall
http://freeautomechanic.blogspot.com...-dex-cool.html