My guess is that the 'casing' you refer to would be the top of the gearbox which replaces the one for the wobble stick, and houses the linkage. The 'bracing'... I have no idea. But my guess is that if you've got the complete transmission, you have both of those parts. I could be wrong.

That all said though, I personally think you're nuts. I've always felt that the short shifters in 140s have a very unprecise feel to them. And they wear out sometimes such that you can get stuck in 3rd or 4th.

The wobble sticks of course have their problems too... falling out of 3rd over bumps, and of course the long throw. But I way prefer them anyway.

The early 1800 short shifters are an exception. I really like the feel of them.

Just my opinion though. If you've got a complete transmission with short shifter, stick it in. I think it'll fit inside the tunnel fine, but you will probably have to cut a new hole in the tunnel, and your rear seat heat system will be in the way.

-Matt

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-Matt '70 145s, '65 1800s, '66 122s wagon, others inc. '53 XK120 FHC