Full floater rear end

Why are you running 11s now?
We're not in the Racer's Forum, so I assumed this was for street. 11s are waaaay overkill for street and factory tubs, somewhat overkill for anything else still on the street.
I'm not into drag racing, so I can't speak to that. And if I was, I'd stay in the low 12s/hi 11s. That's fast enough for this cowboy.
If you need big brakes or just want them, then the Nascar stuff is about as good as it gets.
But by the time you get 15x15s and 31s under there, it might ride like a truck,on the street,lol.
Is weight a big deal? On the street I have to say yes, Nay; emphatically-YES.
The lighter stuff is back there, the less shock damping you can run, and that sweetens the ride. I find 15x10 steel wheels and 11" brakes, with the shocks to control them, all ridiculously hard-riding. I swapped to lightweight aluminum wheels which were half the weight, and 10x2 brakes, and then a shock adjustment, and the ride now is firm but controlled, and no longer does it pound on my internal organs. I run my 10s with zero proportioning and 15/16 cylinders, with a 15/16 master.