Ok, if you can get yourself a copy of Five Onto Kent Will Go which was a well written article in Miscellany circa October/November/December 1986 by Mike Pullen.
Not sure if the MSCC archives can supply a copy but worth an ask.
Basically there are two types of clutch plate, 190mm and 215mm.
If your flywheel has the 190mm plate the pressure plate fixing holes will be on a 225.25mm PCD
If your flywheel has the 215mm plate, the pressure plate fixing holes are on a 246mm PCD
I think that if you have the 215mm plate, then a 1.8/2 litre clutch kit will fit
If you have 190mm plate then you need a Crossflow clutch cover, Type 9 release bearing and a 1.6 Sierra plate. Check it has 1" x 23 spine centre, I made a mistake in my earlier post.
FORD part nos:
Bear in mind these may have been superceded:
190mm:
Pressure plate: 83 BB 7563 AA or BA
Clutch plate: 83 BB 7550 DA or EA
215mm
Pressure plate: 83 BB 7563 DA
Clutch plate: 83 BB 7550 FS
Arwyn