Although my long term plan is still to replace the piece of angle iron from the rear exhaust mount, at the last kit car show I compared my rear ride height with another Superspec and found his was a good 1" higher. So today I lifted mine up another inch. Served it's purpose in that I can now go over the sleeping policemen in the next village without grounding.
Have to see how it has affected the overall ride and handling now.
Later: Drove fast round a roundabout with a passenger in and it was fine. So the exhaust mounting change not so important now.