Far right pic: New Suzuki Sport for other alto, some local alto, old Suzuki Sport shock, new KYB (342020)
Have now installed the new KYBs,
Managed to chop the stubborn rusty bolt off with a angle grinder, reasonably confident the thread is still decent for the new bolt.
Of course I then realised the springs don’t match each other so will have to replace them with a set from the spare Alto,