I think they're 70MM caps. what i'm looking for is just the plastic cap.
Either red, or black, or even CF. Let me know what you have!
There is a couple places in te GTA that can order them for you. They may even have them in stock. Search the Ontario forum for bbs center caps using the search tool on the top right corner of this web page. I ordered black caps from the US that look exactly like the one's you want after getting into an argument with a sales rep of a GTA store over fitment, even when I measured the size I needed!