Which cam will work decently with stock magnum tune?
And here is some reference on factory mopar performance grinds. Notice the rt 2 cam said it required a mopar performance ecu or computer upgrades. With the stock Rev limiter at around 5,000 rpm I would personally stick with something in the 210 and under range for lift at .050. Now ebay sometimes has the mopar performance ecu's used then maybe a larger duration and they are carb compliant in all states.
They were talking about a 5.9 in a dart in this thread. And turning 5,800 rpm just for reference