Does any one have a ribbed-type water pump pulley for a Zetec, I think they originate from the 1.8 Escorts.

Failing that does anyone know the Ford part number?

Not meaning to make assumptions - but I will anyway - is this to convert the serpentine belt on a blacktop to a simpler crank/alternator/waterpump only set up?

Silvertop, yup.

Ford part number anyone, please?