Mopar ( Tube Kit ) info requested !

High rpm is only part of the equation. Clearances need to mandate it too. Personally, I wouldn't do it with a flat tappet and a trap rpm of 6500-7K but I like tighter clearances and very, very accurate machine work. I don't run the HV pumps either. If I did need to worry about it, they'd get bushed. That's just me though. As you read others have their own ideas.