MMC are having some parts remanufactured. I understand full engine gasket sets and pistons are available and crankshaft bearings are on order. Hopefully there may be other parts coming.
The gasket sets are not very good, the pistons are only available in std size and are very expensive and I'm very hopeful that the crankshaft/main journal bearings become available but I'll believe it when I see it...
Oil pumps are also available...for a high price....
It all makes my fully 'off the shelf' rebuilt engines look a bargain at the moment.