'We' didn't. You may have with the rest of the internet, but from a quick search on your previous posts I don't find anything that I was participating in.

My mistake on the IB5/Mondeo statement. My head is in Escort mode at the moment and clutch decision is quite pertinent to me at present.

Of course the input shaft configuration is the primary concern, there are a range of flywheels available for the zetec to accomodate both the IB5 and MTX75 with a variety of plate diameters.

With regards to your previous assumption on the FRS clutch and early boxes, I can assure you the issue was with cover hitting the inside of the casing.