Matt,
You are correct, it is a 84' and the last one where 85'
Mine has only let me down once in the 3 years I've had it!
Very nice land rover you have there, always liked the station wagons and later the county station wagons!
Good luck with the studies mate, I my opinion the best subject to be doing! I am bias tho!
Got the Severn side mvt show coming on the 11/12th on June, it's normally a good show, send a PM if you need any more details.
Cheers
Alex