Steering Column splines number and size

Hey there.
First post here, need some help.
Got a Nardi steering wheel without boss hub. Can’t found any hub for x300 models, all stop to 1994 models.
Some say spline size is different some say it’s the same.
So the only way as I see it is to buy compatible boss hub from another model/brand.
First thing is to know the spline number and the size. I hope someone has tried that already or knows the details.
Last option will be to destroy a stock steering wheel and make my own hub. But I hope I won’t have to get there. It’s fun car/project, not daily driver this I don’t care about airbag etc…

Car is xj6 x300 1995