Would two 12 inch sub-woofers make my 94 Honda accord sound bad?

Would two 12 inch sub-woofers make my 94 Honda accord sound bad? - 1
Added (1). I want either want 1 12 inch sub or both depending on which wont make my car rattle. Which one would be better?
Added (2). I either want one 12 inch sub or both depending on which wont make my car rattle. Which one would be better? The amp i got available is 800 wats.

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