When I bought the bike, the kick start bolt was sheared off and I had to drill it out and tap it. I remember distinctively replacing the bolt with one from a scrap Ford focus car water pump, which had an 8mm head and a loose washer.
This other bike came up for sale locally and when I zoomed in on the pic of the side of it, it seems to have the same bolt arrangement that I had done to it.
If I could get a pic of a standard kick start lever attached to the casing I could determine if it was mine or not.