If it's been machine polished, just use Autoglym SRP and a good wax such as Collinite or FK1000p so protect it, you don't really need a cutting polish now. If you do a mild cut menzerna polish works well. Seeing as the paint has been restored just wax it every 3 months or so and keep it washed regularly in between, and perhaps give it a polish twice a year or something. I've got some pics in my GT thread of the finish using Menzerna and FK1000p wax