Building Discovery 2

After some time took the gearbox down, no damage and today mange with some hard work and a few scratches to install everything back.
Now, I did make a silly mistake and broke a perfectly good gearbox shifter gaiter thinking I can replace it with a new one. However, it seems that there is nowhere in the world to buy one. Does anybody have one for sale?

Also changed the engine and gearbox mounts and a new genuine engine sump.
another question - I installed an oem water pump; I have an oem radiator and a Nissan condenser; does anybody know where I could get these as genuine new parts? And also, a genuine steering pump and master cylinder?