Actually they have 2, or if you really want to get technical, 4.. If you consider the fact that they run 2 split carbs...

Watch for the Pro Stock times to drop considerably this year, they allowed a bead lock in that class which is allowing for more aggressive tunes and better high speed stability...

EFI and Carburation both have their places, just depends on what you're doing.. IN FFW S/B you don't seen many (if any) EFI setups as they just don't make the type of power needed to compete.. They're always a good amount (.3-.4) slower if not more..