Cam selection for 5.9 mag

I vote for the larger of the two. I have this one 20-604-9 - Computer Controlled Hydraulic Roller Camshafts (For 1992-02 Magnum Engines WITH 1.6 ROCKER ARM RATIO) and it's a real pussycat. Wish I had gone bigger. Went from your first option cam to the one I have now. I think the 714 cam is better suited to a truck than a muscle car. IMO.
edit: actually this one 20-614-9 - Computer Controlled Hydraulic Roller Camshafts 1986-1991 with long snout and 1.5:1 rockers but same thing