The 2003-2005 3.0 has 225hp, the 2006+ 3.0si has 255. The 2003-2005 2.5 had 184hp, the 2006+ 3.0 (sold in Europe as the 2.5si) has 215. People don't often compare the old 3.0 to the new because there's not much point - the 10hp less is a negligible difference in real-world performance and the newer engine is lighter and gets better gas mileage.
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