Just a word of warning, when the haynes manual says to only use approximately 25 lb ft of torque when tightening the Xantia steering wheel nut (or torx bolt on s2 cars), listen to them. I just tightened mine on using a small ish socket wrench and heard a cracking sound, obviously I provided a bit more torque than I was meant to and it has cracked the steering wheel spline, so rather than being an O shape its now a ( ) !
That'll be a trip to the scrappers tomorrow then for a replacement before work.. There's a Xantia V6 (

) in my local one, I've been nabbing all sorts off it. Just need the electrovalves and I'll be happy it's stripped of most good bits, barring the engine and gearbox.
Edit - I should probably provide a bit more info here about the failure, the spline the wheel goes onto is tapered, and is obviously (always is obvious afterwards isn't it!) designed to be a snug fit after only 25 lb ft of torque, going too mad on it forces the spline on the wheel to open and fail as mine has. DOH!!