This is a USED MSD RPM SWITCH part # 8950.
MSD 8950 RPM SWITCH IMCA IHRA NHRA WISSOTA Dirt Modified Mud Rat Rod ASA UMP LMS
MSD RPM Chips (21) plus 6 cyl, 8cyl and RPM chips
MSD RPM Module Selector #8671 NASCAR Xfinity 4600 TO 6800 RPM
MSD 87451 MSD RPM Modules 5000 Series Kit, Odd Increments
DEDENBEAR RPM Switch Module RPM-2 NHRA Drag Race Super Pro Super Street Gas
MSD RPM chips, 17ea., for ignition box, NHRA, IHRA, Nascar, Hot Rod
