the maddest JLR thing is that to remove the engine from a RR Sport(?), the body has to come off the chassis!
Who told you that?
Just checked the 494 procedure, no different to any other car, disconnect a load of bits and lift out the top (and thats the straight six)
Also checked the 320, again no different to any other or the 494
None are body off jobs
I might have the wrong LR then ... hence the (?) ...
Presumably this is referring to the L320 RR Sport? IIRC these were basically an L319 (Disco 3) in a party frock and these too had a number of body off jobs.
In all cases, I think the jobs were *possible* without removing the bodies, but experience showed it was easier and quicker to do. As said, its about a dozen bolts, brake lines, some electrical connectors etc. the issue is having the lift (and roof space) to do it.