I am in the process of changing from my zvh to full zetec turbo, I have a spare silver top 2.0 from a mondeo and a spare st170 head. Am i able to just bolt on the st head to the silver top bottom end? something comes to mind that the belt pattern is different due to the water pump, is this correct and if so is there a way around it?

Also are there any benifits to using the st head to achieve 300bhp or am i just best using the original head. If the st head will fit then i would be looking at running the vvt. Is there any benifits to using the vvt or is it just more trouble then its worth.

If any one has any advice or experiences to through my way it would be a great help. cheers adam