Hi guys and girls

Thank you for all the answers.

Dazzyb I'm thinking to add an Ecoteck valve, in the Fiesta ST is the vacuum line to the break servo, the only place to fit it?

And the Crankcase Vent Filter (oil breather) I think the bore size is 13'mm isn't it ?

The pipe I bought (I didnt have the crankcase vent filter but a nice blue pipe to replace the K&N one) was 13mm Iber

You can use any of the vacuum lines on the intake I've always used the brake servo line seems to be the best one plus it's perfect size on the ST you just get a very sharp knife an cut through the line then the valve just slots in and you do up the pipe clamps.