That's a beautiful Summit and most of it is built like a tank!
You'll definitely want to address the rust in the front of the grill box. Use a rust converter such as Ospho, Naval jelly or something similar. These products will actually change the chemical structure of the rust from iron oxide ti iron phosphate. Do NOT use rust remover as you'll lose metal.
Alternatively, if you have metal working skills or have a friend that can work metal, you might look to having anew piece formed out of stainless.
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