Anyone know what the actual grey is that VW used for the interior of most commercial vehicles back in the day? Might as well try and get it correct even though most of it will get covered!
I would poke around theSamba.com's technical section - https://www.thesamba.com/vw/archives/info/colorstype2.php
It’s a shame primer is porous, probably a bit too light as well. Never mind, I’ve found a tin of dark grey and a tin of a white that I’ll never use again so a bit of experimenting later!