I ordered a lower end kit for the 2.5L motor.
The lower end kit had new pan gasket, front and rear crankshaft seals, timing cover gasket, water pump gasket, and something else. It was pretty reasonable too.
I ordered the head gaskets for the 3L and the valve cover gaskets for the 2.5L.
Valve seals seem to be the same for both engines, but I ordered them for the 2.5L just in case.
Oh, I also ordered new headbolts.
Total cost at the local dealer with a discount was about $150.00
I hope that helps.
warmonger