Ok, so here is your wheel. Note that there is no protruding button surround
This is the sport with the round airbag, note button surround
This is an M-Sport, note same button surround.
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If you pull your trim off and find the buttons in the same module then it should be a straight swap. If not then you'll have to source some buttons too.
*Borrowed pictures from around the site*
EDIT - Last pic is an M3 wheel I think but identical bar 'M' Button and non perforated leather hand grips.