aftermarket steering wheel boss kit for Z4 E89

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Hello, I am wanting to install and aftermarket steering wheel on my Z4 E89. But as far as I can tell there is no boss kit for this generation Z4, do you reckon an E85 boss kit will fit or is it a different size?

I tried looking for another BMW in this generation with the same steering wheel so I could use a boss kit from a different model but as far as I can tell they only used this style steering wheel on the Z4.

Or maybe theirs a completely different boss kit that's the same size that might fit, I haven't measured the spindle but surely another manufacturer or model has the same spindle size.

(4:16) For example in this video he uses a MK2 golf boss kit on a Suzuki carry.

Any help or pointers are greatly appreciated, Thanks in advance