Hi,
I have a bis and a cinq sporting and had a look at this. You can bolt the cinq wheels on with the bis bolts but it wouldn't really be safe because they aren't long enough. And you can't use the cinq bolts because the pitch of the thread is different - they will go in but you should notice within a turn or two that it doesn't feel right. If you carry on you will damage either the bolt or the hub.
I have decided to go for something a bit unusual (and complicated) for the bis in the end, and keep the cinq wheels on the cinq, it is a box shaped car and so needs box shaped wheels.