Courage and Cunning by presciousann
http://archiveofourown.org/works/2115945

Gen Salazar Slytherin & Godric Gryffindor

Awesome story with a different twist on the Salazar is Harry.  The story is hard to describe and lets just say no good deed goes unpunished. Salazar was trying to stop his descendant and thanks to polyjuice and the horcrux accidentally looses his memories and grows up as Harry Potter until he gets his letter. Then the memories come back and he turns the wizarding world upside down and inside out. He finds to his surprise in 2nd year he is not the only immortal. I have to say my favorite character is Nora Slytherin's snake. She is hilarious. The story is well thought out and paced appropriately. Salazar and Godric are not super-powered, they make mistakes, sometimes it comes back to bite them in the ass. Nobody is suddenly best friends. While the story is not finished it is over 400,000 and stops after 5th year. Definitely worth a read