Thanks Pinsanity, very helpful.

I contacted both Precision and A Class.  Precision told me that they don't do in house 2 pack clearcoat finishing, only some sort of electro lacquer finish over the plating.  The person I spoke to couldn't say if that was better than 2 pack.  A Class on the other hand sounded exactly like what I need so I'm going to give their 22k + 2 pack a go.  If they turn out like yours I'll be a happy man!

Regards
Paul