Need some advice please.

I have a focus RS cylinder head, well at least i was told its a focus RS one. I compaired it to my 2.0l focus zetec one and the the timing belt idler pulley is slightly larger and further apart from the tentioner, then the normal 2.0l one.

Is this right? As then that means the upper timing belt cover is also different for the RS seening as though the larger pulley will not fit due to the obstruction of the case.

Also, is there any way of checking if this is deffo a focus RS head?


Thanks in advance.