Home/1979-93 Mustang Ignition Boxes and Coils MSD Blaster TFI Coil $76.89 MSD Blaster SS coil, universal fit, black $86.72 MSD Blaster SS coil, universal fit $86.72 MSD Digital 6AL ignition box with rev limiter $431.41 MSD Digital 6A ignition box $372.45 MSD Street Fire Ignition w/ Rev Limiter $259.98