Last weekend, I changed my HT leads and thermostat. The car seemed to be running better.
Well, on my way to work, there is an uphill stretch of dual-carraigeway off a roundabout. Last week, and previously, booting it up this stretch of road, I could get about 80-85mph before having to slow as I join the jammed motorway traffic. This week, I have been able to easily hit 95mph on this same stretch of road. I'm backing off at about the same place as previously. I couldn't believe the changed parts had made such a difference the first day, but getting similar speeds all week has confirmed that the car is now better.