Good to see my old Zed being looked after Fergus. Good on ya. Here are some details of its history.
It's a 1976 A4 UK bike. I bought in 1978, and sold it in 1997 to buy a ZX9R, which I still have. No real regrets as I had to do the race replica fast plastic rocket thing and couldn't justify (at the time) to keep two bikes....
It was originally standard Z900 dark green but I decided in 1981 to fit Z1A tank side panels and tail piece as I liked the yellow striped paint job. Also fitted Z1 forks, bottom yolk and brake calipers. Tail light was changed to round Z1 type as was the airbox which I recall cost me £5. I kept the A4 grab rail as the longer indicator mounts help when fitting throw over panniers for rallies/hols etc. I also fitted the Lesters and had the discs drilled to assist in the wet. Paioli box swinging arm was also fitted and retained the standard adjusters. I had marzochi shocks but see they have been changed. Frame was repainted and I fitted a new set of 4-4s but they eventually fell apart and fitted a Harris 4-1. The carbs are 28 mm from a Mk2.
The engine was split to fit a new cam chain and it was rebored to the first oversize pistons. The cylinder head is from a Z1 as the original developed a crack between the spark plug thread and valve seat. Cam caps have some helicoil repairs I recall. It used to have a home made regulator which looked like something from the Tardus fitted under the seat (Z9s have a space for the std airbox silencer.)
This bike was very reliable and I used it for every thing including commuting, holidays to France, italy, germany, switzerland, belgium, holland. Its even been in a nudist camp in the South of France!!
So good luck with M*M 1*P
Great stuff..... with a superb bit of emotional encouragement to do the project 
