If you want to get them in there is always a way! I'm assuming you may just have to modify the subframe, go have a look at one for sale and see how they connect up
no they wouldn't fit unless you welded the sliding rails onto twingo subframes. the reason for this is that the mounting points on the floor of the twingo are raised at one side. on the clio, they are not ... or at least not so much. so you don't want to be like me with slanted seats!