Fuel pump replacement, water leak

Looks like a lot of silicone around the timing cover and pump gasket both. Sitting that long, I'd recommend getting a new pump and thermostat and doing a cooling system flush. I am a little weary of the chemical flushes with things that have been sitting for years, sometimes the core plugs don't like it to well. Don't be surprised if you find a problem in your heater core or radiator. I use a water hose to reverse flush heater core with temp control in high and hoses unhooked, radiator with top hose connection blocked and lower hose off through cap opening. Each side of block with pump removed through water passages in timing cover with screw in drain plugs out of the sides of the block. When flushing block, block the manifold coolant outlets, remove the thermostat, replace the housing and get a piece of scrap upper hose on it to help divert water away from yourself. I go back and forth on block side to side and from top until everything clears and then use shop vac to blow out the majority of the tap water. You'll be surprised at what is going to come out of there.