I have 15s on mine as well. Had 13.65" with stock cables rerouted. Very tight fit.
I'll have to get a current pic as soon as I change the camera battery.
PIN the risers and bar together if you go over 6" past stock! The bar WILL move on you if you don't... Trust me, I prefer the ride and handling of 15-18 inch apes. I find most cruisers are more responsive with them versus stock bars (and you couldn't pay me enough to run drag bars).
Pinned risers:
Still kinda looks like this:
-WD