Thanks all for the replies!
There was some daylight left when I got home today so jacked up the car, put it on axle stands and had a look. After measuring the internal diameter of the miltek approx 69mm I definatley need 1 clip and 1 reducer of some sort. I am not sure of the dimensions but I guess they are standard. If I can't use the original clip then I guess I will need two clips and a reducer
@PDT I have sent you a PM