car has a 1600 tp out of a type three the bell housing of the 1200 has been ground to fit the twelve volt flywheel. I need to buy a spare clutch. Do I buy a 1600 type 111 clutch or a clucth two suit the 1200 gearbox. IS input shafts the same or not?

you buy a clutch for a 1600, 1200 is smaller in diameter and won't fit the engine. (preasure plate and clutch plate)
Input shaft is the same.

i thought that thanks Craig great appreciated

mmm make sure you take your old 1600 Clutch with you or at least measure it to see if it is 180mm or 200mm it could be either on a 12V flywheel.