Stock length lowered beam, ball joint, rock solid, no rust, £300 new so how does £100 sound? Still LHD so would just need the lock stop and damper mount swapping from your old beam for RHD use (easy to make if you haven't got the old bits).
Too big to ship unless you've got any ideas so collection from Anglesey, North Wales.
(https://i457.photobucket.com/albums/qq299/manxdavid/IMG_20190814_165830_zpshidavf8o.jpg)