Depends what you need it for and what trailer u want to pull.
When o bought my landy it was b4 been used on a farm and the farmer just put the universal tow ball on with 2 bolts straight on to the xmember.
But if your using the trailer on the road i suggest getting a drop hitch and hitch from a Land rover supplies. Not paddocks! They are fairly expensive though. About £150 all in, but don't quote me.
If your prepared to wait there may be one on ebay or put a wanted ad up on these forums. U may also pick one from a breakers if your lucky.
Hope this helps.
tom