Block 67 comprises Paiche, Dorado and Pirana fields. The design was inspired by an earlier concept, the Jaguar Pirana. The Pacu is a relative of the Pirana and native to South America. The design was visually in-between the Lamborghini Marzal, Pirana and the production series I Espada. The Espada was introduced in 1968, one year after the Pirana. His shrine is at Pirana Pir Dargah, Malda City, Malda, West Bengal. The Pirana was designed by Marcello Gandini, perhaps best known for styling the Lamborghini Countach. The Pirana, along with the Lamborghini Marzal, influenced Gandini's design of the Lamborghini Espada. Pirana was a republic of Jats in Tonk during the fourteenth century.