Get cat fitted & bung made & db tested get mot strip rear out get and fit harnes touch up paint get racing hart wheels back on with rainsport3s on Change gearbox oil Get oil temp and water temp gauges The list could go on lol
looks more of a white than a blue valve stem seals or HG id say as you haven't had the turbo rebuild that long ago did you prime the turbo when you fitted it ?? dose it use alot of oil ?? are you loosing coolant.