I like what you've done. I would rather have a 12 flat Duster with the milder cam, 3.54 gears, etc etc than a 11.5 Duster that is pretty much set up for drag strip only. You just got to get your 60 ft down a little, and you'll be knocking on 11's door....
I'll probably want to see a best at something better and likes 11.95. It seems to be the way this car runs or the way I run the car... Before it did (I did) 11.4 lots of 11.5 and like 11.7.
If I spun or made mistakes it got worse...
And often did..lol..