We've just launched a new affordable quick release steering hub for track focused cars. This new kit, hubQR, is a nicely made product with most of the components built here in the US. Ralph@V2 has sorted the hub adapter to work on our Federal Lotus.
I'm very pleased with the quality of this kit. They are available now: hubQR
Another product that will allow a driver to custom fit themselves into their Lotus is the hub50mm. This adapter is over twice as thick as the adapter that comes with the hubQR . It can also be used alone by the driver who does not need the convenience of a quick release system. It is simpler and lighter than all other options.