i've tried something like it on my treasured old Datsun 240Z
with great results.
but one tip i was given was to finish off with "jewellers Rouge", the stuff used to polish diamonds.
i can't remember where i found the rouge,(pre web days) but i t made for a great job.
is your friend:
eBay.co.uk - jewellers rouge, Car Accessories, Metalware, Silver items at low prices