1.5 auto, convert to manual??

Is this possible?
Will somthing like a 1.6 gti box fit straight on?
really have no clue when it comes to Autos  

Been asked many times try search facility here is one [i searched for manual ]  

http://www.vwgolfmk1.org.uk/modules.php?name=Forums&file=viewtopic&t=7796&highlight=manual