Semi close gearbox (2000E), when introduced?

[jono]

I've been musing over the above - were these ratios always the default in the Elan or was the 2000E box introduced at a certain date with std. 'long' ratios boxes used in earlier cars?

[Craven]

viewtopic.php?f=37&t=36326&p=249038&hilit=+2000E#p249038