Hi Bevan and welcome to our forum.
This is a pretty quiet site by many standards but we have a good stock and wealth of knowledge between us and always happy to help if we can.
Many parts you may need you can get through our shop (ask coleigh) and that includes your Z1. I am very friendly with Zpower. Phil and Dave Marsden are friends of mine and they are only down the road.
Your bike sounds quite exciting and I hope to see some pictures very soon.
I hope you enjoy your time here.