The corsa column is from the Corsa C, there are fixed and height adjustable versions available, make sure you get the complete column, preferably with wiring and connectors. Then either buy a box off ebay to set the assistance or persevere with hooking up your speed sensor to give speed variable assist.
Yup, it's the MGTF one, easy to get hold of and cheap on ebay.
If mine doesn't sell soon I'll do the boot area like Chris' (IoW one) and the 75 wing mirrors like Ken, both will make really good additions for daily use!
Was really good to see so many other cars, excellent turnout.
PS Nick: if you are keeping it can you take the ad down as it may devalue other cars being up so cheap? ie mine!