Each kit is within a 1,000 RPM range. For example, the PN 8743 is supplied with: 3,000, 3,200, 3,400, 3,600, 3,800 modules. Five Modules Provided. From 4000-4800 RPM.
MSD 8744 RPM Modules/4000 Series Kit/5 Modules In 200 Even RPM Increment
MSD 8745 RPM Modules/5000 Series Kit/5 Modules In 200 Even RPM Increment
MSD 8744 RPM Module Kit, 4000 Series @ Speed Tech
MSD 8747, rpm modules 7,000 to 7,800, Set of 5
MSD 8745 RPM Modules 5000 Series Kit, Even Increments
MSD Ignition 8744 Ignition RPM Modules 4 000 to 4 800 rpm Set of 5
