The question of option packs and insurance has been discussed in some detail:-
Try this thread:-
http://www.mini2.com/forum/showthrea...tion+insurance
If your insurer or broker thinks that these packs are modifications then it's time to buy your insurance from someone else.
If you're paranoid about insurance matters (as many are) you may be worried that this advice is inaccurate. You may fear that you'll invalidate your insurance if you don't mention that your car is fitted with the Chili pack. If so, find a supplier that is reputable and knowledgeable about cars AND insurance. Tell them the precise spec, explain that the options are FACTORY OPTIONS for this model, and ask them to confirm in writing that they know the spec of your car and have accepted it. Any decent supplier (direct insurer or agent) should be prepared to do this for you to set your mind at ease.