Hi, just thought I would give an update tyre wear and rear trailing arm bushes. Managed to obtain 2 original bushes just before Xmas. To my surprise  there was not much difference between original and pattern parts. I noticed a slight noise from the rear bearing so I will change the bearing and check the brake back plate to see I its rusty where the brake shoes retaining pins go. Coming back to the rear bearing I understand it is a pig to remove. I have searched this site and Calibra Net for any pointers. Unfortunately there isn't any just that its a nightmare to do. I have checked YouTube there's nothing on Calibra bearings but if you put in Omega B, which shares the same bearing set up, there's about 4 how to do's video's. I am not going to use hammers but invest in a press and do it as per manual. Keeping my head down while this Covid storm is blowing and do the job when things settle down and its warmer.
Cheers