It looks like the same dimentions as the 8k or 9k. The big advantage to an oversized winch is that you probably won't overload the motor and since you are using the light end of the capasity you should have a faster line speed.
When i spoke to Jim about what winch id get for the bumper i ordered form him.he never said that the bumper had a winch lb rating. I was looking at a 12000 lb winch, he said i could use it, he just wasnt sure if it would fit.
I ended up with the ramsey 8500 for 395.00. Winer motor.