This trip, Guy Fieri’s diggin’ into succulent sandwiches! In Oakland, a real-deal butchery stacking up killer cheesesteak and off-the-chain chicken. In Modesto, Calif., a funky food truck putting pastrami on pretzel bread and cooking pulled pork in root beer. And in Key Largo, Fla., a seafood staple servin’ up a sandwich that’s become a local legend.