fitment

Hi this if my first ever post so not sure if I'm doing it right or even posting it in the right place.. I've recently bought a spoiler second hand and I'm looking for some help with the fitment. With it being second hand I've literally got nothing else but the actual spoiler so I'm clueless to...

Hi, I was looking at alloys for a 197 and sort of fancied some bola b1's. The ones on eBay are 17", 7.5 wide, offset 40 and 5x108 http://www.ebay.co.uk/ulk/itm/401042617489 would these fit/fit well? Thanks