i am going to watch this thread and hopefully someone can explain how it all works because i want to learn all these tricks but as far as i know your final drive ratio would be irrelevant to where the engines power band is.
it would only effect the rpm band between the gear changes and be slightly broader than someone with the 4:10 gears.
keep in mind i understand this graph is not going to be the same as every engine combo but it does have the SCT tune to reference off of with a CAI.
watching your video i see it laboring to get from 5,000-6,000 and that is probably something to do with the tall gears but i would like to see what happens if your shift point was dropped to 5,000 and used more of the rpm band that has higher torque.