But now no air bag so no excuse

Want to try and fit it now to the mini, the boss kit i got with it was for a 106 but will it still work on the mini? I had a go at taking my current steering wheel off, manging to get the wheel off but when i got to the big bolt in the middle i couldnt get it off, probably wasnt using the right tool knowing me.
Anyone able to give a abit of an idiots guide here? If it helps my steering wheel is the same one that the Grey Clubman Zeemax in Augusts Mini world has...