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With fine tuning and the addition of a new water-cooling system, power output rose to for 1986 ( for 439 85. 5 SVOs ).
Also the 1986 SVO had new " aero " headlights.
These headlights were designed for the 1984 model, but regulations would not allow them to be used until the mid-1985 update.
The vehicle's standard Borg-Warner 5-speed manual transmission was updated then as well, receiving revised gearing to match the new 3: 73 rear end ratio,

1.866 seconds.