My favourite of the auto GMT's and what a spectacular dial considering the original condition of the hands, case and bezel. The new bezel is a decent copy and I think one needs to see it in the "metal" to figure out just how close a match it is to the original. Keeping the original insert goes without saying and I think it would look as good and even better on the watch. This way however you will be keeping the original from any further wear so overall a good compromise.
regards
Paul
www.heuerworld.com