Hi Kate just to say if no one else has told you but if your husband has Uni Track GPz1100 then the manual you will need will consist of one thick book with the older style kwak 1100 on the front and then you will need the suppliment book with the GPz1100 on the front, this book isnĀ“t as thick as the other and if my memory serves me right they were both a sort of brown colour. He needs both books as some of the basic technical data is relivant to both the older models and the GPz. Hope this helps, by the way I know this because I bought them in 85 when I bought a GPZ1100A2. He may wish to know that I removed the humidity filter from mine( the tubular filter that sits in the inlet slot at the back of the airbox)and mine would pull the redline in top at an indicated 158mph and would out accellerate a 900R.