What sort of rims? What are you trying to do?
The p38 has the same PCD & centre bore as a D2. So there are quite a lot of factory rims available in 16" or 18". And some aftermarket options too.
These would be the easiest swap.
Newer Land Rovers use the same PCD, but the centre bore is different. Remember alloys are hubcentric, so they need to fit the centre bore correctly.