As
@Sjacko20 mentioned, I've done all the Gloss Black on every bare plastic part on my van.
I'd say at a guess there's around 8hrs of strip and prep involved if you do all the plastics, including mirrors, but if it's just the bumper grills, then max 6hrs.
I'd seriously consider your mirrors though. I'm not sure what colour your van is, but doing the arms and lower halves in Gloss Black really pick out the mirrors and give a high end look. (I did my whole mirrors gloss black to contrast against my metallic Black paint. It's subtle but effective)
Lastly it's 30 seconds to pop out the side repeaters, so get them to Black them too.
Gloss blacking doesn't just look better, it makes future cleaning and waxing much easier.
One last thing to consider.
If your T6 is a dark colour, ask the bodyshop to spray the rads. They only need a waft over with etch primer and a satin black rattle can.
Reason for this is when you go to the effort of full Blacking, you stand back and all you can see is the huge Silver rads through the grill and it ruins the finished look.
A simple job for a big effect.
Looking forward to seeing the results.
