I recenlty picked up a 98 GTP that needs some minor work, from what I have been reading on this forum it looks like I am gonna have to replace the LIM gasket because there is a small puddle of water between the valve cover and the intake manifold. Is the LIM gasket the one that needs to be replaced? Also I would like to change the valve cover gasket while I have this thing apart. Where is a good place to buy the gaskets from? Napa? dealer? any suggestions are appreciated.