Oh yeah... Well spotted!!

In that case, no, no point the ST Inlet manifold is designed specifically to work with the ST VVT system, it has a vairiable inlet tract which alters the volume of the air in comparison to where the valve timing is.

Some people use the flange part to mount Bike throttle boddies on the Zetec head.

Your best bet is to keep an eye on ebay for either a focus central or if your really lucky a Jackson racing ( much better quality) 76mm throttle body, which will mount on the standard inlet!!