If I'm being honest I'm not sure what is knocking about out there for that engine, if I remember rightly, kam racing have parts for the 1.2. Best bet is to get online and search! As for exhausts, you can buy an expensive one or ask around garages see if you can have one made up for cheaper! In terms of what to go for there are a few options, generally you would look at stainless, then you need to think about type, do you want a straight through, etc... if you do always get your mot somewhere you can trust for potential emissions failures!