SE-R's are all 2.5, either a 5 speed or an automatic, or spec v with a 6 speed and lsd. There is also a 2.5le, it replaced the non-spec SE-R in 2004. The base is a 1.8, 1.8s's in 2005-06 were available in any color including yellow. There is not a 1.8 SE-R.