Doubt Chuck has much if any Mopar experience, but he is a good guy.

Now a Mopar doesn't KNOW it's a Mopar, but Mopar heads for the most part are not nitrous friendly and neither are the old school cams most are enamored with. So whatever you think is safe on timing to start with, you are still likely too high, so take more out. Low timing never hurt anything but the time slip, whereas too much timing will get you started on an ash tray collection

If it likes 12.8 or so on the motor, that's where its gonna need to be on the hose as well