Engines, transmission, vehicles, etc. all have identifying numbers on them somewhere.
Find the attached plate or sticker and it will give you the information you need to contact the manufacturer/dealer and determine exactly what you have. This is important as even though a lot of things are the same, some things change, even in mid-year of production. Having this information will assist parts people better assure you get exactly what you need.
I think the easiest is to get the VIN off the vehicle, contact a dealer and see if they will send you all the stats on your vehicle.