Wilwood Proportioning Valve H771001L and has been pre-terminated with

and has been pre-terminated with 2 pin weather pack connectors on each end

843 in Oval Port

5mm mono plug

You can activate one retard for a nitrous stage and another at top end in high gear for more mph and still have another module left over for dual stage nitrous systems

3L Turbo 1974-93

Wilwood Proportioning Valve H771001L and has been pre-terminated withThe new generation of adjustable proportioning valves combines the latest refinements to deliver precise pressure metering and strength from a compact forged billet design. Pressure adjustments range from 100 1000 PSI and provide for a maximum decrease of 57% in line pressure, the most of any available valve. Adjuster knob with fine thread tuning provides precise pressure adjustment. This adjustment lets you fine tune the front to rear braking balance