Yes your right, the flywheel fitted to the 2.0l Zetec has remained the same over its life from '92-05 (except for the ST170).
I'm running a FRS engine and clutch mated to an early hydraulic/cable Mondeo 1.8 MTX (see above) with the original slave cylinder, no problems.
pa_sjo is going to look at the mechanical clutch gearbox next time he's down his workshop,and make some measurements.
Martin