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 87461 6000 Series Module Kit, Odd Increments
MSD 8746 6000 Series Module Kit, Even Increments for Performance Racing
MSD 8746 6000 Series Module Kit, Even Increments
MSD Performance 87461 Module Kit 6000 Series Odd Increments
Vintage MSD # 8746 RPM Module Kit 6000 Series Has (2) 6000 RPM Modules
