Each kit is within a 1,000 rpm range. For example, the PN 8745 is supplied with: 5,000, 5,200, 5,400, 5,600, 5,800 modules.
MSD 87451 5000 Series Module Kit, Odd Increments
MSD 8745 5000 Series Module Kit, Even Increments
MSD 87451 MSD RPM Modules 5000 Series Kit, Odd Increments