The most popular vehicles for these types of modifications are full-size Chevrolet models, namely the Impala, Caprice, Monte Carlo, and Chevelle. There are three main sub-types of hi-ricer, although the distinctions are blurred and open to debate. Most hi-ricer enthusiasts agree that a "donk" traditionally is a 1971 to 1976 Impala. They were given this name because the "Impala" symbol was referred to as a "donkey" by owners or "donk" for short. To complement the sloping rear, the suspension of donks are frequently higher in the front end than the rear, resulting in a nose-up stance. Other hi-ricers are usually raised evenly, resulting in a more or less level stance. A box is another sub-type of hi-ricer, usually a 1977-1990-era Impala or Caprice with a boxy or squared-off front and rear end. Other models that are frequently made into hi-ricers include the G-body Buick Regal, Oldsmobile Cutlass, El Camino, Pontiac Grand Prix, and Pontiac Bonneville.