need new valve springs

need some suggestions for replacement springs for a cam that I'm waiting to be sent to me via UPS. It's for 318 pre-Magnum roller. The heads are receiving a mild port job, more of a cleaning up than anything. They have also been machined for 1.88/1.60 valves and surfaced. Advertised in. 270 ex. 276, @.50 in. 214 ex. .220, LSA 112 deg. lift 1.6 in. 482 ex. 492. The dude I bought it from don't have the springs that came with it but he says he has some springs from a cam that had more lift and duration, I said no.