1984 GMC Caballero is a badge-engineered version of the El Camino and a rare find in the car market.The Caballero features original brown paint and interior, with only two owners from new and original stock GM 305ci V8 engine.The current auction for the 1984 GMC Caballero ends on Tuesday, May 27, in St. Louis, Missouri.Despite not being a popular collector car, the Caballero offers a unique Western-themed appeal and practicality for hauling items.