I've gotten myself a winch bumper and am looking into winches. I don't really plan on needing to winch more than a couple of times a year, so I'm looking at the Smittybilt XRC winches. Being that the 4Runner probably weighs around 4500lbs loaded, applying the normal "double the weight rule" puts me at about 9k lbs... it seems most people use 8k winches on 3rd gens.
Call it good with 8k and have a snatch block at the ready, or suck it up and get 10k?