Please explain what kind of injection unit the 82 Camaro 305 has......

You could get: A 151-cid inline 40-cylinder with electronic fuel injection (EFI) was the base engine. Options included a 173-cid 102-hp EFI V6 and a 305-cid 145-hp V8 with a 4-barrel carburetor. Z28 buyers could pay $450 for an optional 305-cid 165-hp Crossfire fuel-injected V8