Mine has one fitted and was not MOD. I would suggest it is not going to be the end of the world if not there, but given the choice I would fit one. They look to be about £20 so I would probably add one to my next parts order if I was in your position. (link)thanks ss, a quick search notes they weren't std fitting unless MOD Defenders...though other sites state std fitment to all Defenders. I'm
I have one fitted to my 1987 90 that looks factory. It didn't stop my track rod getting bent but it could have been really badly damaged so I guess it works......