It doesn't have to. There are multiple options out there for mounting a winch to an RRC. To avoid degrading the AO overmuch you have 2 options, either mount it between the frame rails as far back as you can with a discrete winch mount or mount it as high as you can with an upgraded winch bumper. Personally I’d go with the bumper because you get the added benefit of a strong jacking platform and front recovery points. Or places to mount strong recovery points at least.
Originally Posted by REDROVER
9k# winches are not that big unless you go for one with integral solenoids.
Look at the attached. 1st 2 pics borrowed from the RTE web site. The Disco one is listed for the RRC as well they just only have a pic of it on a Disco. Both have a huge increase in usable AO low down over stock. Last pic is a discrete winch mount between the frame rails.
Current LR Stable: 97 D90 ST #1008, 94 D90 SW #1887 (Project), 98 D1 LSE
Memories of: 84 RRC Vogue 4dr, 93 RRC Vogue SE, 84 Ninety 2.5NA SW, 86 Ninety 2.5TD TC, 96 D1 SD