Just picked up a 2002 GTP, needs the lower intake manifold done as well as valve cover gaskets. Car currently has 160,000 on it. It's in pretty good shape, but needs a few things done here and there. Still has dexcool, which is miraculously still orange, but will be draining/flushing that out while doing the intake manifold. Considered doing head gaskets/top end gaskets since it's really not much more work while in there.

My question is mainly, since I will have it that far apart, what else should I be looking at doing? Lifters? Not super familiar with the L67's so I am more than happy for suggestions!

Thanks all!