Why on earth would you want to do a screaming cover for a rap song? Screaming should be reserved for deathcore, heavy metal, metalcore and other worthy styles, not waisted on music monkeys and monkey wannabes waist time listening to
Have you ever checked out Rucka Rucka Ali? He does racist parodies of main stream songs. He has "I Know a Black Guy", "I Can do Whatever I'm White", and many others. You should do a video about him some time.