excellent read !
although I did notice here was not much variation between a standard aerocap @ 10 vs @ 12. however, the angled cap did provide a much greater difference over both straight 10/12.
going by that study, the best gains would come from a front air dam @ 6" coupled with the curved (angled) aerocap.
which also makes me feel much better since that was the direction I was going to take with my Ranger prior to trading it