Thanks for your thoughts guys. Think I will give the cast iron grey a go and see how it looks. If I don't like it I can always re-coat with matt black.
Well the rear brakes are in a million pieces now so the shoes and drums are off to be relined and skimmed tomorrow. Wheel cylinders are original Holden items I had stainless sleeved many years ago so hopefully I only need to clean them up and fit new cups and dust boots.
Found the two springs at the top of the shoes on the right hand side are stretched but the ones on the left hand side are OK. Got me stumped why. Time to try and find some better springs me thinks so if anyone reads this and has a pair they are willing to part with please PM me.
Cheers
Dave.