Possible Clues:

• Organs and such
• Internal parts of a mechanism
• In pubs, a way to show guts
• Filling local roads with asphalt initially takes guts
• Iran ends badly, losing energy, showing guts
• For your guts there's a pub over there in Ulster
• Organs finding a way into hostelries
• Informal intestines and organs
• Works strenuously in the East End in pubs
• Informally, stomach and bowels