In the Book
In the Movie
Sal and Terry have sex while her son is in the same room. This happens while they are staying in a roadhouse on highway 99.
They do it in a tent while they are picking cotton.
Dean, Ed and Mary-Lou show up at Sal's brother's house in Virginia between Christmas and New Years.
They show up at Sal's Sister's house in Virginia on Christmas eve. They have already eaten.
Dean offers to take Sal's Aunt's furniture back to New York in one trip, then return and bring his Aunt back on the second trip.
Dean offers to drive Sal's Mother home in one trip.
Sal lives with his Aunt.
Sal lives with his Mother.
Sal is an Italian american.
Sal is an american but is of French Canadian decent, like Jack Kerouac.