hi mate,if its a 6 speed gear box (pk6) it is mounted on top of the gearbox and its quiet easy to remove... (just use a socket and exstension bar)....be careful not to over tighten though!.....
if its the early type gearbox ( jc range) then its to the left of the nearside drive shaft close to the bottom of the gearbox and with this type of geabox you will lose transmission oil on removal so be careful
paul
April 2009