It's highly unlikely. Goku's powers are based on ki and his alien heritage. The rules of the Pulp Fiction world are based on normal human capabilities (albeit in a very violent and criminal context). His appearance, with his spiky hair and orange gi, would be very strange in the Pulp Fiction universe. Plus, his good - natured heroism doesn't really fit with the seedy underworld of Pulp Fiction.
No. Goku is a character from a fantasy anime world with superpowers like flying and shooting energy blasts. The world of Pulp Fiction is a more realistic (in a crime - noir sense) world. It would be completely out of place for Goku to exist there.
I don't think so. Goku is a symbol of hope and justice in his own universe. In Pulp Fiction, the characters are more morally ambiguous. The storylines in Pulp Fiction are centered around crime, drugs, and complex human relationships. Goku's simple good - vs - evil battles wouldn't really mesh well with the complex and often dark world of Pulp Fiction.