I have a "modded" '10 110 ( cams, pistons, TB etc) that I'm tuning with the PV Pro AT and I recently installed the Fat Cat. I ran it for a few hundred miles and just couldn't tolerate it at cruise. Partly the volume, but also the 'tone'.
I run an LSR on the RK so I know loud. There's more to it than that.
The D&D, which I refer to it as the cochlear Dremel, just had to go. Last week
I put on the Dragula with 2.55 baffle and just LOVE it. Spent the week racing around mountains for 2000 miles. No dyno sheets but it feels like it makes better power on top and it DEFINITELY makes better bottom end. At cruise it does NOT ache my ears.
I love it, I bought it from Frank, his CS was above and beyond. I truly don't give a tinker's damn who built it. I dealt with Frank and would happily do so again.
The Fat Cat is up for sale if that's what you like.