External mounted stator 1987 TE 510 .

I have a 1987 TE 510 with the external mounted stator ... Could anyone please tell me what stator i will need ? Part # ect ... I seen where the external stator & internal stator will NOT work in both applications .
As 1 has winding that go clockwise & the other has winding that counterclockwise .. or something to this nature .
Q - Does it matter in which direction the Flywheel is going in relation to the Stator ?

ie: inverted / reversed ? flywheel with stator mounted to side case cover.

I was told i can buy a stator from several companies but they have to be modified As they are designed for internal case application ? { Mounting plate }

Anyone with information on this Please help , It would be greatly appreciated