I am helping a friend research a purchase for a pre-LP G.
Obviously 2004 had the lowest rated engines and I was told by my lambo mechanic the 2008s are the best.
In fact, the 2008s although rated similarly to the 2006 are actually better performing (think SLs)
I found some similar dynos for a quick comparison on youtube
2008
Results 483/375
2004/2005
Results 410/348
Does anyone have more information?