telling the 9-3 turbos apart

[chutneymunch]

I have today decided to go in search of a 9-3 convertible.
How can you tell if the car is the 155, 185 or HOT?
I currently have a 9-3 saloon which is 155bhp, but I can not see any way of telling it apart from a 185 model.
Thanks
Max

[chutneymunch]

thanks for that - The HOTS look easy tell apart but the 155 and 185 bhp models look a little harder.