Thanks for replies much appreciated reason for change as took car for mapping and want to get more revs from it so was advised to go for a trigger kit so after looking on Internet looked quite an easy thing to make up the brackets for the sensors but the wireing is were I was unsure.i can buy a 36-1 wheel and sensors I was thinking is a cosworth crank sensor for the cas and a 2.5 duratek Mondeo for crank unless there is better on the market to use cheers