Hi fellas. Im running a MSD 6AL with a 3 steb in the drag car. Mild BBC with a small 100 shot from time to time just incase. Im looking for a retard box and maybe even the start retard function. Is the 6AL still a good box to add this retard module to or are the digital units WAY better? I can buy a nice used retard box but got to thinking if Im leaving anything on the table by not being digital? Thanks!!