I picked up the following from rock auto because they were either really cheap or dealer close-outs: valvestem seals (12 pieces) Federal Mogul / Fel-Pro SS 72842 Plenum Gasket (1 piece) Victor Reinz / Mahle MS16508 Intake Manifold Gasket (2 pieces) Victor Reinz MS16210 Valve Cover Gasket (2 pieces) Victor Reinz VS50248 Valve cover grommets (12 pieces) ROL Gaskets MM23506 I understand that if I'm seeing oil on the spark plugs when I take them out, that it's probably because of leaking spark-plug tube seals. Also, am I correct that some of the above items might be time to replace anyways? I don't have the tube seals yet, but I'm wondering, before I attack the engine and start taking this stuff apart, do I have everything? Should I get any other seals / gaskets or do-dads and have them ready to swap in as I'm taking all that stuff apart? And about the valve stem seals - what kind of job is that? Any special tools needed? I do have the FSM (as a set of PDF files, including engine) but haven't looked at it yet (for this project anyways).