Yep you will need a new cover.
Remove pump off the rear of the transfer box & there may be a gear you need to remove as well.
You may need a diffent out put gear depending on the above.
Okay so not the usual "is it worth it" installation questions : I'm going to take the hydraulic winch off me Landy.
It came with it, I've never used it, was holding out for pulling a load of scrap metal out of an old midden on our farm but had...