just received this from Martin. What did I tell you...he is great at research!
I feel like im getting somewhere
I found out the open/close length, for a j type shock, and its 15” open and 10” closed.
This into metric is 254mm closed, and 381mm open.
Looking through the internet, I found that beetles, and early camper vans have shocks which are Very close to this size.
Have a couple of links which I found.
This one should translate, it did for me.
spares_Front-Shock-T2-Genuine- short-385mm-250mm_act_shop. product_pID_209686_lang_EN_ country_GB.htm?crumbStartPage= 2&crumbStartRow=14
spares_KYB-GR2-shock-front- rear-low-each_act_shop. product_pID_100671_lang_EN_ country_GB.htm
a couple of options,what do you think?