Cosworth parts on Ebay.
I'm sure this has been said before but don't believe everything you read on Ebay auctions for Cosworth parts, the whole "no longer available line".
I've just fallen for it by paying £26 inc P&P for a PS tank when my local Ford parts department has just told me they have them for £20 all in.
I also read on the RS Owners site that Fog lights are also available for around £70 so why are people paying that & more on ebay.
Live & Learn, but it only takes a phone call to check.
Hope this helps someone else from making the same mistake I did.