Fangio, Welcome,
The extra loud might just be the exhaust system installed on that car.
Lots of rear view mirrors shake like crazy. Search the archives for lots of ideas. Only way to cure it for good is to get a mirror that glues to the window glass.
I would address the fuel smell before you do anything else. Lots of panteras have been lost over the years from engine fires. Not to mention you could loose your house or worse!!
Find the leak/problem and fix it right away.
Doug M
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