Original SX/GP Ducati 6 pole 6v Stator Plate Questions

Am I right in assuming an original GP ducati 6v 6 pole stator plate will have a wider diameter hole in the centre than a late 6v 6 pole SX stator to accomodate the beefier GP crankshaft?
If so, does anyone know the internal hole diameter in each of the two stators? The spare one I have seems to be 28.7mm and I'm not sure if it's late SX or GP.
Also, does anyone know if a GP stator can be used on a late SX?
Finally, which points are best for a late SX - most dealers seem to sell EFFE (made in Italy)?
Any thoughts appreciated. Thanks.
If so, does anyone know the internal hole diameter in each of the two stators? The spare one I have seems to be 28.7mm and I'm not sure if it's late SX or GP.
Also, does anyone know if a GP stator can be used on a late SX?
Finally, which points are best for a late SX - most dealers seem to sell EFFE (made in Italy)?
Any thoughts appreciated. Thanks.