If you have an actual drag-limited top speed,where the engine is actually at redline,then,with proper gearing,according to Hucho,a 30% drag reduction will equate to about a 10% increase in top speed at redline.
If re-geared,my T-100 would have done 111-mph.
Now,with the streamlining package she's good for 125-mph.
And + 9-mpg on the highway.
