I'm missing a little piece on the rear dogleg between the rear door and rear wheel arch and I noticed when I though I could seagull the piece off my old TH that it's totally different.

At the bottom of the doors on the TH was a "skirt" that would often get caught on grass verges but on the KL it's totally redesigned.

Just wondering if anyone had noticed this or am I late for school.....

KH/KL are completely different too. KL is just a straight thin skirt along the length of the car while the KH is more angular with a central point midway down the car. Never had any probs with the KH so its purely a cosmetic difference IMO.
Not sure which looks "better" from my pov.

http://i142.photobucket.com/albums/r94/tessa403/pies%20stuff/Cars/IMG_04251_zps654f7f59.jpg (http://s142.photobucket.com/user/tessa403/media/pies%20stuff/Cars/IMG_04251_zps654f7f59.jpg.html)

No help to you but I updated from a '99 TH to a 01 TJ (Both Wagons) - the TH wiper parked on the opposite side of the window to the TJ - Trivial I know but some sort of evolution I'm sure the lower trim is the same story.