OMG! 2 days to go!! The parts from Chris Witor arrived today so I went straight into the garage to get them fitted. When I was under the car the other day, (I can't remember why I was under the car - I just was!) I saw that there was very little evidence of any bushes between the gearbox cross member and the floor. The car has a very slight vibration that creeps in at about 75-80 mph. (and if any policeman are reading this, it comes in at 65-70mph!) So I'm wondering if the lack of bushes is what's causing it.
With this in mind, new Superflex bushes were purchased and I ventured under the car again to get them fitted.