Totally understand what mab01uk is saying , my partners father had classic mini's and the stories he will tell you about modding that little car is amazing and you can tell it was a true passion for him , i don't know personally but he said they were great cars to work on, i just don't see the point on what still is a modern car but then i do NOT have the skills to carry out such a task myself and maybe the OP does and wants a challenge , its just a shame that maybe the only thing that would hold you back is an insurance company

but then they are there for a reason and only doing their job i suppose.
If you decide to go ahead then best of luck

Some before and after pics would be amazing