Part #8728.
MSD 8728 Soft Touch Rev Control
MSD 8738 Soft Touch Rev Control for use with MSD 6A Ignition Boxes NASCAR
MSD Digital Soft Touch HEI Rev Limiter Adjustable Rev Limit 3000-9900 RPM
MSD Ignition Soft Touch Rev Control Limiter #8738 with 6000 RPM Chip
