Used msd pro mag timing retard part # 8168 and msd six shooter part number 8158 comes with rubber mounts , 5- zero chips and one 3 degree chips. Item was used on a blown promod for a few races , then was kept for a spare . Sold car now selling extra parts .item in picture is actual item . Let me know if you have additional questions 

Msd 8168 specs 

Brand:MSD Ignition

Manufacturer's Part Number:8168

Part Type:Timing Controllers, Electronic

Product Line: MSD Timing Controls

Summit Racing Part Number:MSD-8168

Circuitry: Analog

Controls Ignition Advance: No

Controls Ignition Retard: Yes

Stages of Ignition Retard: 2

Controller Activation: Programmable

Adjustable: Yes

Adjustment Style: Pills

Ignition Box Required: No

Compatible with Multiple Coil Ignitions: No

Quantity: Sold individually.

Notes: Must be used with a Pro Mag 44 or Pro Mag 12 .

Description: MSD timing controls are faster, more accurate, and more flexible than mechanical advances. They replace the weights and springs inside your distributor, effectively locking out mechanical advance. They can also be used as high-speed retards for extra mph and to prevent detonation, especially when using nitrous oxide. When you hit a switch, the computer automatically retards timing a specified amount of degrees, controlled by plug-in retard modules. Two, three, and four-degree modules are included. The timing controls can be used on 4, 6, or 8-cylinder engines with MSD's 6, 7, and 8 Series ignitions, crank triggers, and locked rotor or distributorless ignition systems.

Msd 8158 specsBrand:MSD Ignition

Manufacturer's Part Number:8158

Part Type:Timing Controllers, Electronic

Product Line: MSD Six Shooter Module Selectors

Summit Racing Part Number:MSD-8158

Circuitry: Analog

Controls Ignition Advance: No

Controls Ignition Retard: Yes

Stages of Ignition Retard: 6

Controller Activation: Timer

Adjustable: Yes

Adjustment Style: Pills

Ignition Box Required: Yes

Compatible with Multiple Coil Ignitions: Yes

Quantity: Sold individually.

Description: These MSD Six Shooter module selectors give you the ability to retard the timing of each magneto six different times and rates. They plug directly into the MSD Pro Mag timing control and the retard rates are controlled by plug-in modules that are activated when 12 volts are applied to the corresponding channel through a pressure switch or timer. Specifically designed for MSD Pro Mag timing controls, the MSD Six Shooter module selectors can also be used with other MSD timing controls.