The Skyline is a straight 6. They had lots of different ones. 2.0 non turbo, 2.0 turbo, 2.5. Non turbo, 2.5 turbo, and the only one people to seem know about is the 2.6 twin Turbo in the GTR trim level. The skyline died in around 2006. We got that model but it was the Infinity g35. The GTR that we get here they came out in 2009 is not Skyline. GTR use to be a trim level now it is the model.