Converted my 2006 to bi-fuel, LPG or Autogas and 87 octane gasoline,results are very good. I had the following installed, a Landirezo Omegas sequential fuel injected system with split fuelling (1% to 5%) gasoline added to the propane injection to avoid valve recession. This set up is set at 3%. before installation,we superchiped the Armada to 87 octane performance, the combination of the 87 tune running on propane was just about seamless, idle and pick up as on gasoline and now the crazy part,18.7MPG on a 418 mile trip @ 65 miles per hr.The instalation supports a 20 inch round x48 inch long propane tank(47.6 gallons) installed where the 3rd bench seat used to be, The installation was done by Downtown Auto in kitchener,On.