Cams for otherwise Stock 5.9 Magnums?

Looking to add a little "snap" to an otherwise stock magnum in a 65 Valiant. Stock meaning , nothing done to the bottom end, magnum exhaust manifolds, stock converter in front of a 904. For now, the car is the original 7-1/4 RE, but we'll be changing it to an 8.8 with either 3.55 or 3.73 gears. It's a low buck build so I'm looking at regrinds and have contacted Oregon cams to see what they have.

I'd be happy taking someone's old roller off their hands if need available. I'm mostly looking for advice so I didn't put a "wanted" ad out.