Hi all, yes I have the car built by the ex caterham Engineer Owain Davies, as you said has CSR back end, modified to fit a S3 chassis, has 15" wheels with 9" rims on the rear. When I first got it the suspension set up was incorrect, so took it to Boss racing to be corner weighted and set up, they found that the car had too much rake that could not be adjusted out as the standard rear progressive springs are too long. Only today I went in to Boss again and had shorter springs fitted, by Rob and Gary May (of Freestyle fame) non progressive type. Also had ZZS tyres fitted all round. I found previously on track that the car would understeer out of tight hairpins (Druids at Brands) Rob of Boss racing said to see how it goes now after small mods done, but probably due to car having much more grip at the rear, It could cause this understeer. He said if it continues they could fit a Gary May adjustable Sway / roll bar at front, which could be softened to suit track conditions. Otherwise I would have to go for a track orientated set up with positive camber on the front, this causes car to skip about on the road though, which is why I have a more road biased set up. What I have seen at Boss is a car they put together with standard CSR rear end attached to S3 chassis, with wide track front, this is being raced by them. I also saw a car there today that was unbelievable, inboard front, didn't check rear, but has a supercharged 2.5 Duratech. Now putting out somewhere near 400 bhp. Anyway I'm going to Brands next week, so I'll wait to see how it goes. chris