Szilagyi book says
Magnum 5.9 V8
piston 470 grams
Piston pin 134 g
rings 40 g
rod 225 g small end
rod 519 g big end
rod total 744
rod length 6.123 jnches
width .9305 inches

1971-1992 LA
piston 584 g
pin 154.6 g
rings 56.6 g
rod 239 g small end
rod 519 g big end
rod total 758 g
rod length 6.123 inches
width 1.200 inches

2000-2001 Viper rods ( P5007504) are made from the Magnum forging but are 6.221 inches long and come stock with ARP rod bolts.
Viper rod piston pins are 0.039 inches smaller.