40 worked wth basically every damn body thats some body.
him and busta rhymes is do for new song together in 2011 rappin fast as fuck.
Pharrel(bc 40 would sound tight as fuck over some his production)
DJ Quik
eminem
DMX
Da Brat
Shawnna
andre3000
he should do a song with Val Young On the hook
also another song with big boi and game since they all 3 sound good together.