Yeah, my FB is a beast for sure. And I recently had a new exhaust, K&N high flow filter and a torque cam installed, along with a tuner and a new tune. Now the peak torque is reached at about 2.5K and plateaus until about 4.5K, instead of a gradual climb and sharp dropoff. I had a couple of incidents when it was stock which made me hurry to buy a new seat with a backrest. Now, I wouldn't ride it without one.
I still think in a longer haul you'd reel him/me in.
M8 Fat Boy S Bonneville Salt Pearl