info ?
 

I have a 98 S reg UK Turbo how can I tell if its a MY98 or MY99 as somebody told me if its late 98 it might be MY99...........

Check the model code, on the ID plate located under the bonnet on the nearside suspension strut.

http://www.sidc.co.uk/faq.htm#2.1.1

MY99 will have the later style front bumper with the orange wedge as well