[Ant]

Unfortunately I am unable to compress photos down enough with my present (10years Mac computer) so I cant post picts of my chassis, but someone may have some of the UK, Reynard designed backbone chassis, RamSC?

Kris has mentioned the csx 7000 series, having the tunnel bracing, this is a good move if you want a stiffer chassis, and the original designed chassis is not stiff enough for serious racing, having race two Cobras, they are hard to tune when using sticky tyres, but no doubt in their day were better than a lot of cars!!!! The problem with adding this uppper structure is having it so it ties in with the front suspension towers and the rear suspension pickup point, it basicaly has to go around the engine head area with diagonal bracing, and in the rear attach to a frame to locate springs etc, so instead of adding to an original style chassis, I went out and purchased a good chassis, as it becomes a weight issue, with having heavy lower main tubes.