You will blow the stock struts, the car will handle like crap, be floaty at high speeds, and potentially unsafe. If your willing to live with that for aesthetic purposes then you won;t be doing anything wrong.
"What will I be doing wrong?" LMAO...Thats too funny. A 2" drop makes a Sentra fell like crap. If you put it "in the weeds" you will hate it. Can we say "Bump"? Don't do it. I want to lower just for looks and at a minimum of money, you have the wrong car.