Oddly, there is a factor to consider with those two vehicles - the type of steering. They both have 'old-fashioned' systems, using a steering box and links. Using a rack and pinion box might make it more difficult to achieve the articulation needed.
As an aside, the (non-commercial) vehicle with the worst turning circle I have ever driven is a LR 110; it completely caught me out the first time I drove one!
Chris