No. If you look at the characters and the overall feel of Pulp Fiction, it doesn't seem like a movie Brad Pitt would have been in at that time. The movie has a very specific aesthetic and style, and the casting was done in a way to fit that. The actors in Pulp Fiction have a certain chemistry that is unique to them. Brad Pitt was off doing other projects and his career path just didn't cross with Pulp Fiction at that point.