E9 CSi auto to manual conversion?

[Job38]

I'm really struggling to find a new car.....

I'm liking this http://www.pistonheads.co.uk/sales/237453.htm

But wondered if it would be possible/viable to convert it from auto to manual?

[MK4 Slowride]

I'd want to keep it original as possible but I think BMW Auto Tradition might be able to assist you with parts & advice.