These big vauxhalls takes some beating mate.Come on you m3 drivers.
Not afraid of those either... at the dyno last year there was a 96 M3 that dynoed at 177RWHP... and my car did 185 before exhaust... 
The guy was looking at me going WTF!? 
177bhp....WTF? Errrm, I'd hazard a guess and say that was probably a 328i with M3 kit on it, and not a very good 328i at that! 177....thats just embarrasing lol! 
Well thats 177Rear whee hp... figure 20% loss... that puts it at over 220BHP...at new they were rated at 240 around here... so maybe something was wrong with the dyno or the conversion factors. I noticed the M badge on the motor and the steering wheel and the cluster so it had to be a real M3... but I know what you guys are saying, the mig is at around 4000lbs.. .mine tips in at 3850 with me in it its around 4100lbs... and that 200hp doesnt make it a speed demon but it does a decent job of keeping up with most of the cars out there.
My other friend has an M3 his is certainly around 250-260hp range... as I have driven it and its scary how fast that thing moves through the rev band..