I cracked the NSR carbon arch on my car and want to replace it. I realise that getting a good match with the opposite rear arch from a different supplier will be all but impossible, so I'm willing to buy both sides. I bought a set from Westermann Motorsport 3 months ago and they finally arrived today. Unfortunately the quality is appalling and I'll be sending them back. What they claim as a carbon arch is actually a heavy, thick lump of GRP with a carbon strip over part of the top face. So, where do a I source a set of good quality carbon rear arches, or is direct from Caterham for ££££ my best hope? The price of the Caterham ones puts me off, but also that my car is a K series and the new Caterham arches don't have the near-side lower cut out. Alternatively, does anyone have a genuine Caterham original NSR arch from a late-'90s for sale? Thanks!