well i filled up this morning since the tail was just finished to get a clean slate for these mods.. and in varous forms of completion the tail was on this tank.. 51.97 MPG
Driving to work today it was quite apparent that the rear glazing on the tail makes a noticeable improvement in MPH at a static place on the vacuum gauge..
There was dew on the car and it was very telling as soon as i got over 35 mph the dew started rolling off the rear glazing in a very uniform pattern.. looked really good to me
Now to drive and wait till I can rack up some more miles to see how the new tail is performing.