For 2006 the F-350 XL is now available with the Power Group option, in addition to the Lariat Highline Edition and the Lariat Outlaw Package. This is a four-door up-to-six passenger heavy-duty pickup truck that features both super-cab and crew-cab configurations, with a choice of XL, XLT or Lariat trim levels. The base engine is the 5.4Liter Triton V8 that produces 300HP. You can upgrade to the 6.0Liter V8 that generates 325HP. All models have a five-speed automatic transmission. The Dual-Rear-Wheels add increased stability when towing.