It'll definitely be a Salisbury and I think it's a 7HA someone will be along to confirm that. Here is an image to help you identify yours Salisbury 7HA the same axle but non LSD was used on your car I believe.
2009 4/4 Henrietta 1999 Indigo Blue +8 2009 4/4 Sport Green prev 1993 Connaught Green +8 prev