X98 Cup Car Oil & suspension set up

[Warbyx98]

Hi,
I’ve recently bought an a gen 4 cup race car for track days this year, some endurance races next year, and wanted to check on oil grades for the engine. The parts manual is indicating 10w60 but the maintenance manual says 5w40. Anyone running a cup car for track days / endurance races and know the best option ?

Also if anyone has any suspension set up recommendations, either by circuit or in general would be interested to read them. (Particularly camber)

Thanks