Hello Together, just looked for a little bit on the Internet and found the following page:http://en.wikipedia.org/wiki/GM_54%C2%B0_V6 engine According to this, the X25XE and the X30XE are both built on the same engine.Now my question to the experts: Can I convert my 2.5 V6 with 170 hp to the 3.0 liter V6? Or is this thought nonsense? What’s different about the two engines? VG, Rolf