Ive been doing some research on the Park Avenues, if you have seen my other posts you know we are looking at one. I know the 3.8's have gasket issues, just needing to know if the 1991 had the issues that some of them did. Did they all have the cheap gaskets until 2004+ or did the gaskets start out with the good metal ones in the early years then GM cheapened out? I am just needing someone to CONFIRM if the 1991's have the plastic gaskets or the metal ones, this will affect our decision. Thanks guys! Hope someone can answer this.