This is going to sound silly but ... (plz don't flame me)
I have a 2003 Astra Convertable. What I want to know is; is there any visible difference in the engine of the 1.6 and the 1.8?
What (other than the paper work) would be the easiest way to find out whats actually under the hood? I'm not really into the technical stuff, can anyone help? I looked around the engine and cant see anything that would tell me, any of you guys know?