It looks like PJ1's Suzuki Satin Gray Case Paint (which apparently was a perfect match) is no longer available. Has anyone used anything else that is close the original engine paint?

Ive looked over this side the pond and its no made any more, you need to take the case to a paint shop that do cans and get it matched.

I am restoring my GK76 and found an exact match for my case paint.
Halfords own Volvo Dark Grey 228 was an identical match.
Hope this helps
Vic