Hubcaps – I bought stainless centres from Depanoto some time ago, see:
<p style=”text-align: center;”>http://www.depanoto-boutique.com/coupelle-inox-vis-citroen-traction-av-c2x8207576</p>
Bumpers – I would go for stainless every time. They will always stay bright with minimum TLC but one small ding on a chrome bumper will almost certainly mean having it re-chromed sooner rather than later. I originally bought mine (for the Legere) from Jonathan Howard who I believe now supplies the TOC but the six came with them – so they must be available on the continent if the Club cannot help.