I recently bought an April 2007 VZ Commodore wagon with factory LPG injection. Without paying a tech $$$s, how do I know what power it is producing, ie how to identify what engine is in it? (V6 Alloytech I know) but are there any identifiers to tell me 175kw, 190kw or what? All I can say just now is that the 2007 is somewhat more powerfull than my 2006 VZ and that is on LPG. Its overtaking ability is much better than my 2006 on unleaded.