MSD 87451 5000 Series Module Kit, Odd Increments, Kits include five modules

MSD Ignition 87451 RPM Module Kit

MSD IGNITION 5100-5900 RPM Odd Series Module Kit- 87451

MSD Ignition RPM Module Kit 5100-5900 RPM Odd Series 87451

MSD 87451 Ignition RPM Modules 5100 to 5900 rpm Set of 5

MSD Ignition RPM Module Kit 5100-5900 RPM for Automotive Performance

MSD 87481 8000 Series Module Kit, Odd Increments

MSD 8745 5000 Series Module Kit, Even Increments