PART NUMBER: 87441. 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.
MSD Performance 87441 Module Kit 4000 Series Odd Increments
MSD Performance 8744 Module Kit 4000 Series Even Increments
MSD Performance 87461 Module Kit 6000 Series Odd Increments
MSD Performance 87451 Module Kit 5000 Series Odd Increments
MSD Performance 8747 Module Kit 7000 Series Even Increments
MSD Performance 87481 Module Kit 8000 Series Odd Increments
