the arrows are pointing to the pump bolts- they are fine. the issue is the bronze screws to the impeller flange at far right.
I need to remove the pump to drill out the screws. my original question was are the arrows pointing to the correct bolts to remove the pump. I still have not addressed this. so far no leaks and the impeller is old but still working. I have to do it before I take it on a cruise though.
I think I need new reading glass more than you need a new pump. I focused all my attention on the two arrows and ignored the rest of the shot. Speaking as a hobbyist photographer, it would have been helpful to include a shot pointed straight at the pump. The stripped bolts would have been more visible. If you don't have the engine cowling in your way ,and you have a steady hand, you might be able to drill out the bolts while the pump is still attached to the engine, otherwise remove those screws, and take the pump home. Removing the hoses first should make the job easier, and like I said before, six point sockets are preferred to avoid rounding over the bolts If you have access to a drill press, use it. get a set of cobalt drill bits in 1/64" increments, and starting with the smallest size drill out the bolt, being careful to center the bit, and increase the bit size one step at a time. When the thickness of the remaining metal is less than 1/16 of an inch, you should be able to remove the remaining piece. A little PB blaster and heating the surrounding metal should speed up the process a bit. I would avoid heating up a brass or bronze bolt directly, as its melting point is much lower than steel, and you might inadvertently "weld" it to the surrounding metal. I made the same mistake trying to remove a broken brass bolt from my heat exchanger, and posted a thread about it