so, then...

Stock Hp Mopar resto camshaft with .450/.458 will convert in to:

.450/1.5=.300x1.6=.480
.458/1.5=.3053x1.6=.48853

new resto cam will be:
268/284 dur with .480/.48853 lift

and the 474 MP cam

.474/1.5=316x1.6=.5056

new 474 cam will be:
280 dur with .5056 lift

With a Charger born in Chrysler assembly plant in Valencia, Venezuela