Hi,
This is a shot in the dark as unsure about sizes but the shape looks right although the fixing plate may/will need moding.
Milners do a bump stop for a isuzu which is only £12.
https://www.milneroffroad.com/isuzu/trooper/ubs26-3-5petrol-1998/ubs26-suspension-0/ubs26-suspension-bump-stop-rear