bmw 330 buying advice

[Srobbo18]

after looking round at many cars i am back to looking at the one i wanted in the first place a bmw 330, i want some advice please my budget is about 9k, what sould i be looking for is the sport model much different to the 330i what year sould i be looking at, what was changed on the face lift models and how many miles is ok so on so on any advice would be great thanks