They didnt, but the pre 2000 ones had a 2 pieces harmonic balancer that you could remove the pulley and bolt up the v belt one instead of the one i have where the serpentine pully and balancer itself are one piece unit.
Thanks Wes! Used to be what we had to do to run V belts on a Magnum was change out the timing cover for an LA and run LA stuff. Nice to see there are other options now.