Damn it! I'm in the Past!

Harry Potter gets transported back to Dudley's birthday, right before he gets his Hogwarts letter. No longer being a naive eleven-year-old boy just glad to leave the Dursleys, Harry starts to notice something fishy's going on. With his second chance, Harry makes a series decisions that will change to course of history forever. AD/MW/RW/GW bashing. Also posted on fanfiction.net and ao3.