I had the block honed (glaze burst) and checked by the machinist who said it didn't need decking.
Here are (most of) the parts I've had for the engine rebuild for my black GT:








Powder coated (satin black) sump, water pipe and cam cover:

Gearbox cleaned:

Engine block being sprayed matt black

With core plugs painted:

Head painted:

How it looks now:

More photo's to be uploaded