Spark plugs fouling? 2trfe

Honestly the water pump is not a bad idea, usually the pump will come with the needed gasket.

I would purchasr both gaskets, use whats needed during the job and return whats not needed after the job.

 

You should replace timing components while it's opened up. Def new chain tensioner. Maybe replace slides and chain depending on wear. And injector seals when they're being reinstalled too.