sadly, life just isn't that simple.
it really comes down to type approval. one (or more) versions of the disco was submitted for approval with the dickie seats in, and they subsequently passed that approval, as the discovery was designed to take them, with appropriate mounting points, chassis rail locations, seat belt mounts and the like.
however, the freelander was only ever designed for the boot to be a boot. as I have said before, and echoed by mike whiskey (****, sound like a police radio there for a mo), there really isn't the room. sure anything can be made to fit, but the legalities and technicalities make the project unfeasable. Also, has no chassis, only subframes.
wish you luck if you decide to proceed.