My GT started to misfire on boost, king lead pretty much fell off in my hand at the dizzy end. Cap and arm weren't in great shape either so new cap, arm, king lead, plugs, oil and filter and it's flying now New cap and king lead was 55£ from Toyota and I used fiesta rs turbo plugs from Demon Tweeks, 17£ to the door, ordered at around 2pm and arrived at about 12 next day to Northern Ireland lol