Possible Clues:

• Celebrity from Spain writing to lying holder of poisonous material
• Dodge two-seater
• Venomous snake, person
• Just half a dozen through being so poisonous
• Six, for each one that slithers away
• Car alarm brand
• Six from each snake
• Venomous snake with large hinged fangs
• Clergyman inwardly pious? The reverse — a treacherous type
• Sporty Dodge model